Force Review

A basketball player throws a basketball toward the net.  The balls fall back down.  What force causes the ball to fall back down?

• the pull of gravity
• the push of the ball
• the push of the player
• the pull of air pressure

A bicyclist rides on a flat road and then stops pedaling, but does not apply the brakes.  The bicyclists stops because of

• balance
• friction
• attraction
• magnetism

The principal's chair has wheels.  It sits on her office floor next to her desk.  She pulls the chair away from her desk.  What makes her chair move?

• the force of gravity
• the force of her pull on the chair
• friction between her hand and the chair
• friction between the wheels and the floor

Force is a

• distance
• push or pull
• motion
• speed

A student places a ball on the ground and kicks it.  The ball moves along the ground.  Why does the ball move?

• The kick decreases the weight of the ball
• The kick applies a force to the ball
• The kick decreases the force of the gravity acting on the ball
• The kick removes friction between the ball and the ground

Can an object in motion ever change directions?

• Yes, if another force works upon the object
• No, the object will keep moving on the same path
• Yes, the motion will change without force
• No, the object can only move if they are pulled

If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

How could you make an object increase its speed?

• use less force
• use more force
• use no force

How will this object move? 

• It won't move. 
• It will move to the right. 
• It will move to the left. 
• It will move up. 

Tags

NGSS.MS-PS2-2

How will this object move? 

• It won't move. 
• It will move to the right. 
• It will move to the left. 
• It will move in both directions. 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2