A 4.5 kg trolley moving at 6 m/s runs into a 4 kg trolley at rest. After the collision the first trolley continues in the same direction at 2.5 m/s. Find the velocity v′2 of the second trolley.
A 5 kg trolley moving at 10 m/s runs into a 4 kg trolley at rest. After the collision the first trolley continues in the same direction at 3.5 m/s. Find the velocity v′2 of the second trolley.
A 1600 kg car moving at 13 m/s runs into a stationary 900 kg car and the two lock together. How much kinetic energy ΔK is lost in the collision?
A 0.5 kg glider moving at 3 m/s makes a perfectly elastic head-on collision with a 4.5 kg glider at rest on a frictionless track. Find the velocity v′1 of the first glider after the collision (positive in its original direction).
A 0.35 kg ball hits a wall at 11 m/s and bounces straight back at 8 m/s. The contact lasts 25 ms. Find the average force Favg of the wall on the ball.
A 0.6 kg ball hits a wall at 26 m/s and bounces straight back at 9 m/s. The contact lasts 10 ms. Find the average force Favg of the wall on the ball.
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