A baseball is thrown with a velocity of -45 m/s (negative because it is moving toward the batter). The batter strikes the baseball, which leaves the bat with a velocity of 70 m/s. If the baseball was in contact with the bat for 0.02 s, what acceleration did the bat apply on the baseball?

A speeder travelling at a constant velocity of 40 m/s passes by a police car that is initially at rest.   Soon afterwards, the police officer starts moving towards the speeder with an uniform acceleration of 5.33 m/s2. What is the position of both cars, in meters, when the police officer catches the speeder?  Take the initial position of the officer as the origin of the x-axis.

Consider a grey squirrel falling from a tree to the ground. Use a coordinate system in which positive is downward for this problem. a) Find the squirrel’s velocity, in meters per second, just before hitting the ground when it falls from a height of 1.3 m. Ignore air resistance.  b) The squirrel softens its landing by bending its legs when it touches the ground, thereby stopping itself over a distance of 7.6 cm. Assuming a constant rate of deceleration, find the squirrel’s acceleration during this process, in meters per second squared.

A 50.0-g Super Ball traveling at 28.0 m/s bounces off a brick wall and rebounds at 18.5 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.45 ms, what is the magnitude of the average acceleration of the ball during this time interval?