A4.0-kilogram ball moving at 8.0 m/s to the right collides with a 1.0-kilogram ball at rest. after the collision, the 4.0-kilogram ball moves at 4.8 m/s to the right. what is the velocity of the 1-kilogram ball?

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

The discovery of the electron as a subatomic particle was a result of

Suppose an object in free fall is dropped from a building. its starting velocity is o m/s. what is the speed (in m/s) of the object falling after 2 seconds?