The definition of a collision has always confused me.

In a one dimensional collision, a 4 Kg object and 6 Kg object have initial velocities 8 m/s and 2 m/s with directions shown in the figure. 4 Kg 8 m/s 2 m/s 6 Kg

A 2210 kg car experiences an impulse of 20,000.0 N · s during a collision with a wall. If the collision takes 0.43 s, what was the velocity of the car just before the collision? 27 m/s 18 m/s 9 m/s 10 m/s 12 m/s

A 1500 kg object moving at 10 m/s collides with a brick wall and comes to a complete stop. If the collision time is 0.05 what was the average stopping force?

The definition of a collision has always confused me.

A billiard ball with a mass of 0.45 kg collides head on with a billiard ball that has a mass of 0.55 kg. The heavier billiard ball has a velocity of 6.5 m/s and the other ball is initially stationary. What is the velocity of each ball immediately after the collision if the collision was perfectly elastic?

A rubber ball with a mass of 0.3 kg is dropped onto a steel plate. The ball's velocity just before impact is 4.5 m/s and just after impact is 4.2 m/s. What is the change in the ball's momentum? O 2.61 kg m/s O 4.86 kg m/s 1.37 kg m/s O 3.66 kg m/s

Students in a technology class are racing cars propelled by carbon dioxide cartridges. A burst of gas is released when the seal of the cartridge is broken, and this propels the car down the track. The cartridges are designed to provide a certain impulse. Use the concepts of impulse and momentum to explain why such a cartridge will propel a lighter car to a higher speed.

A 5 kg blob of clay is moving forward at 2 m/s when it has an inelastic collision with a 2kg blob of clay initially at rest. What will be the final velocity of the two blobs after they stick together?

A 10 gram bullet is fired from a gun and embeds itself into a 1.0 kg block of wood. After the collision the block of wood skids away at 4.0 m/s. What was the initial speed of the bullet?