Newton's Third Law of Motion

Two metal spheres are suspended on wires so that they hang next to each other, just touching. Sphere X is raised to a certain height and released. Describe what would happen to Sphere Y.

• Sphere Y will swing away from sphere X, half as far up as sphere Y had started.

• Sphere Y will swing away from the sphere X, just as far up as shpere Y had started.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The head of a hammer is often made of steel. This makes the head heavy, which helps create a strong force for driving nails. Steel is also strong. The head of a hammer must be strong to resist what force?

• The force of the air resistance on the moving hammer

• The force of the person using the hammer

• The force of gravity pulling down on the hammer

• The force of the nail pushing in the opposite direction

Tags

NGSS.MS-PS2-1

All forces occur in pairs

• true

• false

Tags

NGSS.MS-PS2-1

Newtons law states that for every action, there is an_________ reaction

• unequal and opposite

• stronger and opposite

• equal and similar

• equal and opposite

Tags

NGSS.MS-PS2-1

When a heavy football player and a light one run into each other, who exerts more force

• The light one

• Their force are equal

• The heavy one

Tags

NGSS.MS-PS2-1

How is this an example of Newton's Third law

• Only the ball is using the head

• only the head is pulling the ball

• They are both exerting an equal force on each other

Tags

NGSS.MS-PS2-1

When a small car pushes a big truck, the truck applies an equal and opposite force on the car.

• False

• True

Tags

NGSS.MS-PS2-1

A baseball bat hits a baseball with a force of 100 Newtons. What is the force and its direction exerted by the ball on the bat?

• 100 Newtons, same direction

• 100 Newtons, opposite direction

• 200 Newtons, opposite direction

• 200 Newtons, same direction

Tags

NGSS.MS-PS2-1

Force always come in________

• waves

• triplets

• pairs

Tags

NGSS.MS-PS2-1

The forces in a force pair are in _______ direction

• opposite

• same

Tags

NGSS.MS-PS2-1