Motion Review

A push or pull that can change the position or motion of an object/material is --

• magnetism

• motion

• force

Tags

NGSS.MS-PS2-2

Friction is the _________

• force of attraction that causes a magnetic material to move

• force that acts in an opposite directions to movement

• act of applying force in order to move something away

Two students were pulling on the rope below with the same amount of force. The man increased the amount of force he was using by 2 N and the woman increased the amount of force she was using by 4 N. Which BEST describes the motion that resulted after they increased force?

• The both moved farther from one another

• The man moved towards the woman

• The woman moved towards the man

• They both moved farther from one another

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

As two objects get closer together, what happens to the force of gravity between them?

• The force of gravity increases

• The force of gravity decreases

• The force of gravity stays the same, since their masses are constant

• Not enough information

Tags

NGSS.MS-PS2-4

As an astronaut travels far away from Earth, his weight

• increases because gravity increases.

• decreases because her mass decreases.

• remains the same because her mass remains the same.

• decreases because gravity decreases.

Tags

NGSS.HS-PS2-4

A ball on a string is travelling in circular motion. Which vector represents the centripetal force?

• The green vector because it points towards the center of the circular path
• The blue vector because it shows the direction of the object's inertia
• The green vector because it shows the path of the ball
• The blue vector because this is the way the ball will move when it is released.

Tags

NGSS.HS-PS2-1

Centripetal acceleration always points

• in the direction of the object's motion
• in the opposite direction of the object's motion
• towards the center of the circle
• towards the outside of the circle

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

Why do we need friction?

• It helps objects go faster. 
• It helps objects go up higher.
• It helps make objects go slower or stop.

What does a curved line on a distance-time graph show?

• That the speed is changing. 
• That the object is not moving. 
• That the object is constant. 

Tags

NGSS.MS-PS3-1

What are EQUAL forces acting on an object in opposite directions that do not change the object's motion?

• Friction
• Weight
• Balanced Forces
• Unbalanced Forces