Two air track gliders are arranged on a level, frictionless track as shown. An e
ID: 1479160 • Letter: T
Question
Two air track gliders are arranged on a level, frictionless track as shown. An experiment is conducted in which glider A is launched toward the stationary glider M. After the collision, glider A has reversed direction. In a second experiment, glider M is replaced by glider N, which has the same mass as glider M. Glider A is launched toward the stationary glider N with the same initial speed as in experiment 1. After the collision, glider A is at rest. The mass of glider M is five times that of glider A. (mM = 5mA, mM = mN ) The magnitude of the change in velocity of glider A in experiment 1 is that in experiment 2. greater than less than equal to There is insufficient information to determine. After the collisions, the speed of glider M is the speed of glider N. greater than less than equal to There is insufficient information to determine. The speed of the center of mass of the system of gliders A mid M in experiment 1 as a result of the collision. increases decreases remains the same There is insufficient information to determine.Explanation / Answer
1.
In experment 1, change in velocity is more as velocity has changed from positive to negative
In experiment 2 final velocty is 0, so change is less as compared to experiment 1
Answer: a) greater than
2.
Since momentum is conserved, change in momentum of glider A must equal to the change in momentum of other glider (M or N)
In experiment 1, this change was more. So speed of M will be more
Answer: a)greater than
3.
speed of centre of mass will be same if no external force acts on the system
Answer: c)remains the same