Car number 2 is a 1400kg toyota that was traveling 3 m/s when it rear-ended car number 1. if the crumple zone of car number 2 took 0.3 seconds to compress during the crash, what is the force felt by car number ones bumper?

Apositive point charge q is fixed on a very large horizontal frictionless tabletop. a second positive point charge q is released from rest near the stationary charge and is free to move. which statement best describes the motion of q after it is released? assume q stays on the table

A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s

What is a subatomic particle with a negative charge and very little mass?