With what speed uuu does the ion exit the acceleration region.

1400 kg car has a speed of 27 m/s. if it takes 7 s to stop the car, what is the impulse and the average force acting on the car?

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?