Force and Motion Review

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

• inertia

• gravity

• friction

• balanced force

Suri tapes batteries to three identical toy cars to give them different masses. Then, Suri measures how far each car rolls when she launches it from the same starting point using the same stretched rubber band. Car #1 has 1 Magnet Car #2 has 2 magnets Car #3 has 3 magnets How will the force of the rubber band affect the cars?

• Car 3 will travel the longest distance

• Car 1 will travel the shortest distance

• Car 1 will be the least affected by the force acting upon it.

• Car 3 will be the least affected by the force acting upon it.

Tags

NGSS.MS-PS2-2

A spring scale measures force. What is the force that causes the reading on the spring scale?

• friction

• gravity

• mass

• weight

Two race cars with the same mass started moving on a race track at the same time. One car reached the finish line of the track in 15 sec, and the other reached the finish line in 20 sec. Why did the cars take different amounts of time to reach the finish line?

• The force of gravity slowed one car but not the other car.

• The slower car did not experience any force, so it moved more slowly.

• The forces on one car were balanced and on the other car unbalanced.

• The engine of the faster car exerted more force than the engine of the other car.

Tags

NGSS.MS-PS2-2

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

According to Newton's laws of motion, which block will have the greatest motion?

• red

• blue

• green

• yellow

Tags

NGSS.MS-PS2-2

Which question best describes the subject of Newton's first law of motion?

• Why do objects fall naturally toward Earth?

• Is there any difference between a push and a pull?

• What happens to an object when it leaves Earth's atmosphere?

• What makes an object start moving or change the way it is moving?

Tags

NGSS.MS-PS2-2

What two factors affect the gravitational force between two objects?

• force and size

• size and distance

• mass and distance

• mass and force

Tags

NGSS.MS-PS2-4

Friction between objects produces

• gravity

• load

• inertia

• heat

If a car suddenly makes a sharp turn, the passenger slides to the side of the car because of

• inerita

• free fall

• gravity

• friction