Newton's 3rd Law of Motion

When a skateboarder pushes against a wall, what force causes them to move away from the wall?

• The muscles in the skateboarder's hands moved them away from the wall.

• The wall pushed back in the opposite direction.

• A balanced force

• Inertial force

When an object applies a force on another object, the second object applies a force:

• Of the same strength on the first, but in the same direction as the force applied by the first

• Of increased strength on the first, but in the opposite direction

• The net force equals zero so the forces are balanced.

• Of the same strength on the first, but in the opposite direction

What are the forces two objects apply to each other called, which are always found together and depend on each other?

• Contact Force

• Non Contact Force

• Applied Force

• Force Pair

Sir Isaac Newton studied how forces affect the motion of objects. He developed three rules know as:

• Newton's law of force

• Newton's law of acceleration

• Newton's law of velocity

• Newton's laws of motion

Which of the following statements is part of Newton's Third Law of Motion? (Pick all that apply)

• For every action, there will be an equal and opposite reaction.

• When an object applies a force on another object, the second object applies a force of the same strength on the first object.

• An object at rest will stay at rest, and an object in motion will stay in motion unless an unbalanced force acts on the object.

• The acceleration of an object is equal to the net force exerted on the object divided by the object's mass.

In a force pair, one force (the first force) is called the:

• Action Force

• Reaction Force

• Friction Force

• Non Contact Force

In a force pair, the other force (the second force) is called the:

• Non Contact Force

• Friction Force

• Action Force

• Reaction Force

Which of Newton's Laws of Motion is NOT about balanced or unbalanced forces?

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

A person is pushing to the right on an object. What force(s) are acting on the person in this scenario?

• A force to the right that is equal to the force that is applied by the person.

• A force to the right that is less than the force that is applied by the person.

• A force to the left that is greater than the force that is applied by the person.

• A force to the left that is equal to the force that is applied by the person.

Which of the following does NOT represent a force pair?

• When an ice skater pushes off a wall, the wall pushes the skater off the wall.

• When a diver jumps off a diving board, the board pushes the diver up.

• When a boy pulls a wagon, the wagon pulls back on the boy.

• When you pull on the rope in tug-of-war, your opponent pulls on the other side of the rope with equal force.