Two persons A and B who are at rest on an ice skating rink, push each other so that A acquires a velocity of 11.5 m/s towards North. If the mass of person A is 55 kg and that of B is 43 kg.  What is the velocity acquired by B and in which direction? Your answer must be in the order Velocity / Direction.

A person in a kayak starts paddling, and it accelerates from 0 to 0.8 mile/hour in adistance of 0.8km. If the combined mass of the person and the kayak is 80kg, whatis the magnitude of the net force acting on the kayak?

A m1 = 5.01-kg block is placed on top of a m2 = 10.0-kg block (figure). horizontal force of F = 45.0 N is applied to the 10.0-kg block, and the 5.01-kg block is tied to the wall. The coefficient of kinetic friction between all moving surfaces is 0.182.(a)Draw a free-body diagram for each block and identify the action–reaction forces between the blocks.(b) Determine the tension in the string in magnitude of newtons.(c) Determine the magnitude of the acceleration of the 10.0-kg block.

A man ( mass = 100 kg) fall freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of .2s. The average force exerted on her by the ground is + 2000 N, where the upward direction is taken to be the positive direction. A) from what height did he just fall? Assume the only force acting on him during the collision is that of the ground. B) suppose instead of the man, a 5 kg rubber ball was dropped from the same vertical distance and the ball bounced back conserving the linear momentum. What would be the velocity of the ball just when it bounced back?