Santa must achieve a velocity of 42 m/s in order to clear a tall mountain. If he is going 30 m/s and has only 4 seconds to make his target velocity, what acceleration will he have?

Aregular polygon has angkes of size 150° each.how many side has the polygon

In what direction does an applied force move an object

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)