G10 Ch4 Revision

Two horizontal forces, one 180.0 N and the other 200.0 N, are exerted in opposite directions on a boat on a lake. What is the magnitude of the net horizontal force on the boat?

• 380 N

• 200 N

• 180 N

• 20 N

Two dogs play tug-of-war with a rope toy that has a mass of 0.50 kg. If one dog pulls on the toy with a force of 140.0 N, and the other dog pulls in the opposite direction with a force of 138.0 N, what is the magnitude of the horizontal acceleration of the toy?

What is the magnitude of the force of gravity on a person who has a mass of 80.0 kg?

• 176 N

• 686 N

• 784 N

• 801 N

A 60.0-kg boy rides in an elevator that accelerates upward at 1.80 m/s². What is the magnitude of the net force exerted on the boy?

• 9.8 N

• 108 N

• 480 N

• 588 N

          The free-body diagrams below show four ways that two different forces could be exerted on an object. In which diagram is the object moving to right with 200 N?

• Diagram 1

• Diagram 2

• Diagram 3

• Diagram 4

Two teams, the Fifes and the Drums, are playing tug-of-war. Each team has 3 members. Both teams exert a force of 2002 N on the rope. The rope is not accelerating. What is the net force on the rope?

• 0 N

• 333 N

• 2002 N

• 4004 N