Lesson: Impulse and Collisions

Water from a fire hose is directed horizontally against a wall at a rate of 50.0 kg/s and a speed of 42.0 m/s. Calculate the force exerted on the wall, assuming the water’s horizontal momentum is reduced to zero.

What impulse is applied to the driver by the seatbelt, assuming he follows the same motion as the car?

What is the average force applied to the driver by the seatbelt?

A piece of microdebris in Earth’s orbit has a mass of 8.55 µg. The debris strikes a spacecraft at a velocity of 1.28 km/s relative to the spacecraft. The microdebris particle comes to rest relative to the spacecraft 74.8 ns after striking it. What magnitude force was exerted on the spacecraft by the collision?