In a springy collision, if the fast moving trolley collides with a slow

one, then the fast one will bounce back at speed of

A. slow one

B. less than slow one

C. more than slow one

D. with the same speed as before

1 Answer

Answer :

slow one

Related questions

Description : If a trolley collides with a stationary trolley of double mass, then they move off with A. half of the original velocity B. one third of original velocity C. double the original velocity D. triple the original velocity

Last Answer : one third of original velocity

Description : A ball is moving with a speed v towards north, collides with an identical ball, moving with the same speed towards east. After the collision, the two balls stick together and move towards north –east. The speed of the combination is (a) 2v (b) 3v (c) v (d) v/2

Last Answer : Ans:(c)

Description : A white ball of mass 1.0 kg moving with initial speed u = 0.5 m s-1 collides with stationary red ball of same mass, they move forward making angle of 90° between their paths. Their speed is A. 1 m s-1 B. 0.354 m s-1 C. 2 m s-1 D. 3 m s-1

Last Answer : 0.354 m s-1

Description : An x-ray photon collides with a free electron, and the photon is scattered. During this collision there is conservation of: w) momentum but not energy x) neither momentum nor energy y) energy but not momentum z) both momentum and energy

Last Answer : ANSWER: Z -- BOTH MOMENTUM AND ENERGY 

Description : A freight car weighing 20 tons and moving at a speed of 7 miles per hour on a horizontal track collides and couples with a stationary car that weighs 15 tons. Neglecting friction, determine the velocity of the coupled cars.

Last Answer : ANSWER: 4 MILES PER HOUR

Description : Momentum of two objects moving with same speed but in opposite direction upon collision is A. increased B. decreased C. is zero D. is infinite

Last Answer : is zero

Description : A moving neutron collides with a stationary α-particle. The fraction of the kinetic energy lost by the neutron is – (1) ¼ (2) 1/16 (3) 9/25 (4) 16/25

Last Answer : (4) 16/25

Description : A moving neutron collides with a stationary a – particle. The fraction of the kinetic energy lost by the neutron is

Last Answer : 16/25

Description : A hydrogen atom moving at speed `v` collides with another hydrogen atom kept at rest .Find the minimum value of `v` for which one of the atoms may get

Last Answer : A hydrogen atom moving at speed `v` collides with another hydrogen atom kept at rest .Find the minimum value ... hydrogen atom `= 1.67 xx 10^(-27)kg`

Description : In the Compton effect, a photon of wavelength l (read: lambdw) collides with a stationary electron. The wavelength of the emitted photon is: w) longer than l x) shorter than l y) the same as l z) no photon is emitted

Last Answer : ANSWER: W -- LONGER THAN l

Description : A ball of mass 1 kg moving with a velocity of 2 m/sec collides directly with a stationary ball of mass 2 kg. If the first ball comes to rest after the impact the velocity of second ball after impact will be a.1.5 m/sec b.0.5 m/sec c.Zero d.2 m/sec e.1.0 m/sec

Last Answer : e. 1.0 m/sec

Description : Which of the following material handling equipments is not suitable for moving materials in varying paths? (A) Hand trolley (B) Belt conveyor (C) Crane (D) Truck

Last Answer : (B) Belt conveyor

Description : In an elastic collision, the RELATIVE velocities of separation of the two bodies after impact compared with the relative velocity of approach before impact is: w) always greater x) always smaller y) always the same z) first greater, then smaller

Last Answer : ANSWER: Y -- ALWAYS THE SAME

Description : The closer satellite is to Earth, its speed should be A. more fast B. more slow C. zero D. any constant value

Last Answer : more fast

Description : The closer satellite is to Earth, its speed should be A. more fast B. more slow C. zero D. any constant value

Last Answer : more fast

Description : The closer satellite is to Earth, its speed should be A. more fast B. more slow C. zero D. any constant value

Last Answer : more fast

Description : To replace a ball with another ball by collision, a snooker player must consider the condition that A. the collision must be head on B. The moving ball must not be given any spin C. both A and B D. no conditions required

Last Answer : both A and B

Description : A 10 kilogram body initially moving with a velocity of 10 meters per second makes a head-on collision with a 15 kilogram body initially at rest. The two objects stick together. What is the velocity of the combined system just after the collision?

Last Answer : ANSWER: 4 METERS PER SECOND 

Description : What happens when an unstoppable object collides with an unmoveable object?

Last Answer : I’m guessing a black hole swallows the earth

Description : The string in fig. is passing over small smooth pulley rigidly attached to trolley A. If the speed of trolley is constant and qual to `v_(A)` towards

Last Answer : The string in fig. is passing over small smooth pulley rigidly attached to trolley A. If the speed of trolley is constant ... =0` D. `V_(B)=4/5 V_(A)`

Description : What is the total momentum of the system before collision If two 0.5 kg balls approach each other with the same speed of 1.0 ms?

Last Answer : Momentum is mass times velocity. But in this case, you don'teven need to calculate that: If I understand correctly, the ballshave the same mass, the same speed, and they move exactly inopposite directions - so ... other words, if oneball has a momentum of +M, the other one will have a momentum of-M.

Description : What is the total momentum of the system before collision If two 0.5 kg balls approach each other with the same speed of 1.0 ms?

Last Answer : Momentum is mass times velocity. But in this case, you don'teven need to calculate that: If I understand correctly, the ballshave the same mass, the same speed, and they move exactly inopposite directions - so ... other words, if oneball has a momentum of +M, the other one will have a momentum of-M.

Description : For the production of X-rays, the electrons which strike with the target are a) slow moving b) fast moving c) vibrational electrons d) free electrons

Last Answer : b) fast moving

Description : During an INELASTIC collision, the colliding bodies w) lose kinetic energy x) keep the same amount of kinetic energy y) gains kinetic energy z) first lose, then gain kinetic energy

Last Answer : ANSWER: W -- LOSE KINETIC ENERGY

Description : true or false: you can slow down to look at a collision if you're curious. -General Knowledge

Last Answer : The given statement is false.

Description : Why is the collision of molecules big but the reactions are still slow?

Last Answer : The molecules must collide to react with one another. The number of collision is very big but the rate of most reactions are still slow. Why is that?

Description : If I buy a laptop case that is too big for my laptop does this mean that my laptop will bounce around more and thus be protected less?

Last Answer : A laptop bag that is too big can pose a problem if the size difference is significant. A little bit of space won't hurt but a 15" Macbook inside a 17" bag may be too large and cause it to shift and bump around a lot.

Description : Can one bit of light bounce off another bit of light? -Physics

Last Answer : Yes, one bit of light can bounce off another bit of light, but not directly, and the effect is very rare. Light is made out of small quantum objects called photons. When you turn on a ... light scattering more manageable. It is only a matter of time before the LHC observes light bouncing off light.

Description : In a perfectly elastic collision, the relative speed of approach and relative speed of separation are A. equal B. in equal C. zero D. infinite

Last Answer : equal

Description : How do kids bounce back like this, and why don't adults?

Last Answer : My grandfather explained it to me after my brother was sick, it went like this, “they’re closer to the ground.”

Description : How can dogs bounce back from fairly major medical events in a way humans can't?

Last Answer : Are you applying the “dog years” multiplier? Dogs are descended from wolves, who evolved to be tough enough to survive as a wolf. And they are small and have fast metabolisms.

Description : What do you do for yourself to bounce back from a disappointment?

Last Answer : As a 25 year government worker, I can tell you there's a lot of apathy everywhere and part of it is for reasons like you describe. For myself, when I have any kind of disappointment, I talk to myself about ... 's good in my life? My family, my finances, an upcoming trip, etc. That's what helps me.

Description : Do you stew about things or bounce back quickly?

Last Answer : In the past, I would stew to the point of getting physically ill. Since I have started my meditation (Vipassana) practice, I no longer stew.

Description : Should I hit bottom on purpose just to bounce back?

Last Answer : answer:Points of no return are sometimes just that, points of no return. Why risk it? Dropping out leaves you without ammunition to rebuild yourself and the new life you get may not be what you want. I ... you want. A new life comes from extreme positive effort, not letting go of the one you have.

Description : Bounce back in tagalog?

Last Answer : talbog or babalik muli

Description : How can you throw a ball as hard as you can, to only have it come back to you, even if it doesn’t bounce off anything?

Last Answer : A: Throw the ball straight up in the air.

Description : In a perfectly elastic collision, momentum and energy are A. not conserved B. conserved C. becomes zero after collision D. equal before collision

Last Answer : conserved

Description : Which of the following statements is TRUE about an ELASTIC collision between two particles? Is it true that: w) neither particle loses any of its kinetic energy x) neither particle loses any of ... that lost by the other z) the total kinetic energy before and after the collision remains constant

Last Answer : ANSWER: Z -- THE TOTAL KINETIC ENERGY BEFORE AND AFTER THE COLLISION RE

Description : Two cars collide head-on. They stop at the point of collision. Both cars must have one of the following. Do they have w) equal masses x) equal but opposite velocities before the collision y) equal but opposite momenta before the collision

Last Answer : ANSWER: Y -- EQUAL BUT OPPOSITE MOMENTA BEFORE THE COLLISION

Description : Two trains, both 50m long, moving in opposite directions cross each other in 4 seconds. If one is moving thrice as fast the other, then the speed of the faster train is. A) 45km/hr B) 19 km/hr C) 95 km/hr D) 67.5 km/hr

Last Answer : ANSWER:D Explanation:  Let the speed of the slower train be x' m/sec  The speed of the sfaster train = 3x m/s  Relative speed = (x +3x)m/sec  = 4x m/sec  50 + 50 / 4 = 4x  100 / 4 = 4x  100 = 16x  x = 100 ... the faster train = 3 * 25 / 4  = 75 / 4 m/s = (75/4 *18 /5)km/hr  = 67.5 km/hr

Description : Spacing of Trolley refuges a) Every 100m b) If span is more than 100m, on each pier c) Ballasted deck bridges – every 50m d) All the above*

Last Answer : d) All the above*

Description : Should cars have bumpers that collapse under impact? (1) Yes, since the offending car should get damaged and pay for the mistake (2) No, since it would be very expensive to get the car repaired (3) ... kill them (4) Yes, since they help to absorb the impact of a collision and keep the occupants safe

Last Answer : (4) Yes, since they help to absorb the impact of a collision and keep the occupants safe Explanation: In automobiles, a bumper is the front-most or rear-most part., ostensibly designed ... in high-speed impacts, but are increasingly being designed to mitigate injury to pedestrians struck by cars.

Description : If the total kinetic energy and momentum of a system becomes zero after collision, then the collision is A. elastic B. inelastic C. conserved D. not conserved

Last Answer :  inelastic

Description : Should cars have bumpers that collapse under impact? (1) Yes, since the offending car should get damaged and pay for the mistake (2) No, since it would be very expensive to get the car repaired (3 ... kill them (4) Yes, since they help to absorb the impact of a collision and keep the occupants safe

Last Answer : (4) Yes, since they help to absorb the impact of a collision and keep the occupants safe

Description : Maximum distance apart of trolley refuges on bridges with main spans of 100metre or more is i. 50 mtr j. 100 mtr k. 200 mtr l. a refuge over each pair*

Last Answer : l. a refuge over each pair*

Description : In an isolated system two cars each with a mass of 1000 kg collide car 1 is initially at rest while car 2was moving at10ms what is the magnitude of their combined momentum after the collision?

Last Answer : What is the answer ?

Description : In an isolated system two cars each with a mass of 1500 kg collide car 1 is initially at rest while car 2 was moving at 5ms. What is their combined momentum after collision?

Last Answer : Need answer

Description : Why is a passenger seen running towards the front while getting out of a slow moving car ?

Last Answer : Passengers of slow moving cars also get stuck in speed. If a passenger suddenly falls off a moving vehicle, he may fall to the front for inertia. So he ran to the front and kept running until he was normal.

Description : A man is standing on a weighing machine in a lift which is moving. The weighing machine will slow MINIMUM reading when, the lift is moving? A. Upward with uniform speed B. Downward with uniform acceleration C. In a free fall due to failure of the lift mechanism (Answer) D. None of these

Last Answer : C. In a free fall due to failure of the lift mechanism (Answer)

Description : Sometimes I move fast,Sometimes I move slow;But my speed is truly constant,And nowhere I go.What am I? -Riddles

Last Answer : Time.