Motion Test Review

A push and a pull are two examples of which of the following?

• a force

• velocity

• a law of motion

• a balanced force

Tags

NGSS.MS-PS2-1

Which term names a force of attraction between two objects, even if they are not touching?

• inertia

• gravity

• friction

• unbalanced force

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which of the following gives the definition of inertia?

• a sudden shift in acceleration

• a continuous downward force

• the tendency of objects to resist a change in motion

• the ability of objects to move in a smooth, curving path

Which of the following terms identifies a cause of a change in motion?

• inertia

• mass and force

• balanced forces

• unbalanced forces

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

What term identifies a force that opposes motion and acts between two objects that are touching?

• inertia

• gravity

• friction

• balanced force

Four students used spring scales to measure the force needed to pull blocks made of different materials up a smooth ramp. All of the blocks moved at the same rate. The students recorded the force needed to move the different blocks: 6 N, 8 N, 7 N, and 5 N. Which of the following is a possible explanation for why the blocks required different amounts of force?

• The blocks all had different masses.

• The blocks all had the same mass but different sizes.

• The blocks had the same mass, but the force of gravity changed.

• Each student exerted the same force, but the friction was different.

Tags

NGSS.MS-PS2-2

This spring scale is measuring the force on a block hanging from the hook. What would be the reading on the scale if an identical second block were added to the hook?

• 2.2 N

• 2.2 g

• 4.4 N

• 4.4 g

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

When you coast down a hill on a scooter, you move faster and faster. If you continue moving onto a level surface, finally you will stop moving. Which of Newton’s laws of motion explains why you stop?

• Newton’s first law explains that when you reach the bottom of the hill, you run out of energy, so you stop moving.

• Newton’s first law explains that gravity affects you when you move downhill, but not when you move on a level surface.

• Newton’s second law explains that no force acts on your scooter on the level surface, so it stops moving.

• Newton’s third law explains that friction between the tires and the ground is an unbalanced force that changes your motion.

Ryan bends a plastic ruler backward and then releases it to hit a button. Force from the ruler causes the button to slide across a table. Ryan bends the ruler back 4 cm for starting point one, 6 cm for starting point two, and 8 cm for starting point three. What are the most likely results of Ryan’s experiment?

• starting point one = 16 cm, starting point two = 26 cm, starting point three = 36 cm

• starting point one = 36 cm, starting point two = 26 cm, starting point three = 16 cm

• starting point one = 16 cm, starting point two = 16 cm, starting point three = 16 cm

• starting point one = 36 cm, starting point two = 26 cm, starting point three = 0 cm

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Four forces are acting on the block shown in the following illustration: F is the applied force, F₁ is friction, Fg is the gravitational force, and Fn is the normal force—the upward push of the table on the block. If force F is applied to the block and it does not move, which statement is true?

• F and F₁ are equal.

• F and Fn are equal.

• F₁ is greater than F.

• Fg is greater than F.

Tags

NGSS.HS-PS2-1