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What is the momentum of a 100 kg motorbike travelling at 10 m/s?
The momentum is calculated by multiplying the mass by the velocity, resulting in a momentum of 1000 kg·m/s.
Before a collision, a 25 kg object is moving at +12 m/s. Find the impulse that acted on this object if after the collision it moves at a) +8m/s b) -8m/s
A 2575-kg van runs into the back of a 825-kg compact car at rest. They move off together at 8.5 m/s. Assuming no friction with the ground, find the initial speed of the van.
A 15-g bullet is shot into a 5085-g wooden block standing on a frictionless surface. The block, with the bullet in it, acquires a velocity of 1.0 m/s. Calculate the velocity of the bullet before striking the block.
A hockey puck, mass 0.115 kg, moving at
35.0 m/s, strikes a rubber octopus thrown on the ice by a fan. The octopus has a mass of 0.265 kg. The puck and octopus slide off together. Find their velocity.
A car with mass 1245 kg, moving at 29 m/s, strikes a 2175-kg car at rest. If the two cars stick together, with what speed do they move?
