8th Grade Playing with Forces (Newton's 1st, 2nd, and 3rd Laws)

Which of Newton's Laws explains why a soccer ball starts moving when it's kicked?

• A) First Law (Inertia)

• B) Second Law (F=ma)

• C) Third Law (Action-Reaction)D) All of the above

What happens when two forces act in the opposite direction on an object?

• • A) The object moves in the direction of the weaker force.

• • B) The object's motion doesn't change.

• • C) The object moves in the direction of the stronger force.

• • D) The object spontaneously changes shape.

Tags

NGSS.MS-PS2-2

According to Newton's Third Law, if you push on a wall, the wall will:

• • A) Not exert any force in return.

• • B) Exert an equal and opposite force on you.

• • C) Collapse, depending on the force applied.

• • D) Move in the opposite direction.

What does Newton's Second Law state?

• • A) Force equals mass times acceleration.

• • B) For every action, there's an equal and opposite reaction.

• • C) Objects at rest stay at rest unless acted upon by a force.

• • D) The acceleration of an object depends only on its mass.

True or False: According to Newton's First Law, an object moving in space will eventually stop due to its inertia.

• True

• False

Explain how Newton's Third Law applies to the game of tug of war.

Tags

NGSS.MS-PS2-1

Describe an example of a game or sport where Newton's Second Law of Motion is illustrated and explain how.

Tags

NGSS.MS-PS2-2

How can understanding Newton's First Law help in designing a game that involves shooting a projectile?

Tags

NGSS.MS-PS2-2

When a person sitting in a stationary boat throws a heavy object out of the boat, what happens to the boat?

• • A) It moves in the same direction as the object.

• • B) It stays in the same position.

• • C) It moves in the opposite direction of the object.

• • D) It sinks slightly.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Imagine a ball at rest on the ground. In your own words, describe the forces acting on the ball while it's at rest. Then, explain what would happen if the ball were kicked lightly and why, based on Newton's Laws of Motion.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5