Retest for Newton's Laws

How would you solve for the acceleration of a 20 kg box being moved with 50 N?

• 50N x 20 kg

• 20 kg / 50N

• 20 kg + 50N

• 50N / 20 kg

Tags

NGSS.MS-PS2-2

What happens to a ball that is rolling on the smooth sidewalk and then into the thick grass?

• The ball speeds up due to an increase in friction.

• The ball slows down due to a decrease in friction.

• The ball slows down due to an unbalanced force.

• The ball stays moving at a constant rate due to an unbalanced force.

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

A frog leaping upward off the lily pad is pulled down by gravity and lands on another lily pad instead of continuing in a straight line.

• Newton's 1st Law of Motion (Inertia)

• Newton's 2nd Law of Motion F=ma

• Newton's 3rd Law of Motion (Action/Reaction)

Tags

NGSS.MS-PS2-4

As the fuel in a rocket ignites, the force of the gas expansion and explosion pushes out the back of the rocket and pushes the rocket forward.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

Tags

NGSS.MS-PS2-1

When you are riding in a car and the car suddenly stops, your body continues to go forward.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

Tags

NGSS.MS-PS2-1

A pitched baseball goes faster than one that is thrown gently.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A swimmer pushes water back with her arms, but her body moves forward.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

Tags

NGSS.MS-PS2-1

As an ice skater pushes harder with leg muscles, the ice skater begins to move faster.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

Tags

NGSS.MS-PS2-1

Rocky, age 12, and Parker, age 20, skip pebbles on the pond. The pebbles Parker throw go farther and faster than Rocky's.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-1

NGSS.MS-PS3-5

When you paddle a canoe, the canoe goes forward.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law