Physical Science Forces and Motion Review

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

• inerita

• free fall

• gravity

• friction

According to Newton's second law of motion, what two factors determine an object's acceleration?

• the speed of the object and the power of inertia on the object

• the mass of the object and the amount of force applied to the object

• the shape of the object and the material from which the object is made

• the strength of gravity as it is applied to the object and weight of the object

Tags

NGSS.MS-PS2-2

A rock is balanced on the side of a long, sloping hill. Although the rock is very heavy, a gentle push causes it to start moving down the slope. How can a small force cause a large mass to move?

• The direction of the force is important, but not the amount of force.

• The push on the rock increases the smount of friction, so the rock starts to move.

• The small push balances the forces that are keeping the rock in place and causes it to move.

• The forces on the rock are balanced, and a small additional force causes them to be unbalanced.

Tags

NGSS.MS-PS2-2

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

Tags

NGSS.MS-PS2-4

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

NGSS.MS-PS3-5

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?

Friction between objects produces

• gravity

• load

• inertia

• heat

Arrows represent the forces applied to an object. A longer arrow means a greater force. Which object will move upward?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-2

Katie sits on the ground and rests her hands on a bowling ball in front of her. She uses all her force to push the bowling ball away from her body. Next, Katie rests her hands on a soccer ball situated in front of her at the same location. She uses all her force to push the soccer ball away from her body. How does the movement of the two balls contrast.

• The soccer ball moves a greater distance because more force is acting on it.

• The soccer ball moves a greater distance because it has less mass.

• The bowling ball moves a greater distance because it has more mass.

• The bowling ball moves a shorter distance because less force is acting on it.

Tags

NGSS.MS-PS2-2