A book is at rest on a horizontal table. The main forces acting on the book are the normal force from the table and the weight of the book. What is the best description of Newton's third law reaction force to the weight?

(b) How much force does the astronaut exert on his chair while accelerating straight up at 10 m/s^2?

Taylor (150 lbs.) and Josh (200 lbs.) are standing on frictionless ice. Taylor pushes on Josh. During the push which person exerts the greater force on the other?

Taylor (150 lbs.) and Josh (200 lbs.) are standing on frictionless ice. Taylor pushes on Josh. During the push who experiences the greater magnitude of acceleration?

Ryan bounces a small rubber ball on the ground. During the bounce when the ball is in contact with the ground, how does the magnitude of the force of the ball on the ground compare to the magnitude of the force of the ground on the ball?

Boxes A and B are in contact on a horizontal, frictionless surface (Fig. E4.23). Box A has mass 20.0 kg and box B has mass 5.0 kg. A horizontal force of 250 N is exerted on box A. What is the magnitude of the force that box A exerts on box B?

World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has magnitude 15 m/s2. How much horizontal force must a 55-kg sprinter exert on the starting blocks to produce this acceleration? Which body exerts the force that propels the sprinter: the blocks or the sprinter herself?

A small car of mass 380 kg is pushing a large truck of mass 900 kg due east on a level road. The car exerts a horizontal force of 1600 N on the truck. What is the magnitude of the force that the truck exerts on the car?