Question

I will marked you as a brainliest.

1. What is the momentum in kg m/s of a 10kg truck travelling at;
a) 5m/s b)20m/s c)36km/h

2. A ball X mass 1kg travelling at 2m/s has a head-on collision with an identical ball Y at rest. X stops and Y moves off. What is Y's velocity?

3. A boy with mass 50kg running at 5m/s jumps on to a 20kg trolley travelling in the same direction at 1.5m/s. What is their common velocity?

4. A 50kg girl jumps out of a rowing boat of mass 300kg on to the bank with a horizontal velocity 3m/s. With what velocity does the boat begin to move backwards?

5. A truck of mass 500kg moving at 4m/s collides with another truck of mass 1500kg moving in the same direction at 2m/s. What is their common velocity just after the collision if they move off together?

Answer 1

1. a 50 b200 c 360
1st ka hi answer aata hai

Answer 2

1.a)50 kgm/s
b)200
c)360kgm/s
next is also easy
hope it helps