A 1700 kg car moving at 7 m/s collides head-on with a 1200 kg car moving at 5 m/s in the opposite direction. The cars lock together. Find their common velocity v′ just after the collision (positive in the first car’s direction).
A 1100 kg car moving at 16 m/s collides head-on with a 1300 kg car moving at 13 m/s in the opposite direction. The cars lock together. Find their common velocity v′ just after the collision (positive in the first car’s direction).
A 3.5 kg glider moving at 2 m/s makes a perfectly elastic head-on collision with a 2 kg glider at rest on a frictionless track. Find the velocity v′2 of the second glider after the collision.
A 1 kg glider moving at 11 m/s makes a perfectly elastic head-on collision with a 2 kg glider at rest on a frictionless track. Find the velocity v′2 of the second glider after the collision.
A 0.55 kg ball hits a wall at 20 m/s and bounces straight back at 18 m/s. The contact lasts 20 ms. Find the magnitude of the impulse J the wall gives the ball.
A 0.35 kg ball hits a wall at 11 m/s and bounces straight back at 10 m/s. The contact lasts 5 ms. Find the magnitude of the impulse J the wall gives the ball.
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