A 0.5 kg trolley moving at 5.5 m/s runs into a 1.5 kg trolley at rest. After the collision the first trolley continues in the same direction at 0.5 m/s. Find the velocity v′2 of the second trolley.
A 4 kg trolley moving at 2 m/s runs into a 5 kg trolley at rest. After the collision the first trolley is at rest. Find the velocity v′2 of the second trolley.
A 1 kg glider moving at 6 m/s makes a perfectly elastic head-on collision with a 2.5 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 3 kg glider moving at 11 m/s makes a perfectly elastic head-on collision with a 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 1500 kg car runs into a parked 1800 kg car. The wrecks lock together and skid 20 m before stopping. The coefficient of kinetic friction between tyres and road is 0.7. Use g = 9.81 m/s². Find the speed v1 of the first car just before the collision.
At a crossing a 1500 kg car travelling east at 20 m/s collides with a 1300 kg car travelling north at 16 m/s. The cars lock together. Find the speed v′ of the wreck just after the collision.
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