The bodies in the diagram suffer a head on collision and stick to each other afterwards Find their common velocity.

A ball of mass $250 g$, rolling on a horizontal floor with the speed $4.00 \mathrm{m} {\mathrm{s}}^{-1}$ hits a wall and bounces with the same speed. What is the magnitude and direction change of the momentum of the ball?

A ball of mass $250 g$, rolling on a horizontal floor with the speed $4.00 \mathrm{m} {\mathrm{s}}^{-1}$ hits a wall and bounces with the same speed. Is momentum conserved in this case? Why or why not?

Two masses moving in a straight line towards each other collide as shown in the diagram. Find the velocity (in meter per second) of heavier mass after the collision.

A time-varying force varies with time. As shown in the graph. The force acts on a body of mass $4.0 \mathrm{kg}$. Find the impulse (in N s) of the force from $\mathrm{t}=0 \mathrm{s} \mathrm{to} \mathrm{t}=15 \mathrm{s}$.

A time-varying force varies with time. As shown in the graph. The force acts on a body of mass $4.0 \mathrm{kg}$. Impulse of the force from $\mathrm{t}=0 \mathrm{to} \mathrm{t}=15 \mathrm{s}$ is $88 \mathrm{N} \mathrm{s}$. Find the speed (in meter per seconds) of mass at $15 s$. Assuming the initial velocity was zero.

A time-varying force varies with time. As shown in the graph. The force acts on a body of mass $4.0 \mathrm{kg}$. Impulse of the force from $\mathrm{t}=0 \mathrm{to} \mathrm{t}=15 \mathrm{s}$ is $88 \mathrm{N} \mathrm{s}$. State the magnitude of initial velocity (in meter per seconds)of the body such that it is brought to rest at $15 \mathrm{s}$.

A boy rides on the scooter pushing on the road with one foot, with a horizontal force that depends on time as shown in the graph.While the scooter rolls a constant force of $25 \mathrm{N}$ opposes the motion. The combined mass of the boy and the scooter is $25 \mathrm{kg}$. Find the speed of the boy after $4 s$, assuming he started from rest.

A boy rides on the scooter pushing on the road with one foot, with a horizontal force that depends on time as shown in the graph.While the scooter rolls a constant force of $25 \mathrm{N}$ opposes the motion. The combined mass of the boy and the scooter is $25 \mathrm{kg}$. Draw a graph to represent variation of boy's speed with time.