Interaction Between Force and Mass

a force that opposes the motion of a body across a surface or through a gas or liquid

• friction

• force

• acceleration

• weight

• balanced forces

a pull or push that is applied to an object

• friction

• force

• acceleration

• weight

• balance forces

a change in the velocity (speed, direction, or both) of a body

• friction

• force

• acceleration

• weight

• balance forces

What is the unit to MEASURE force?

• Kilogram

• Meter

• Pascal

• Newton

If two objects have the same mass, the object acted on by a _______  ________ will have the greatest change in speed.

• smaller force
• greater force
• greater velocity
• smaller velocity

If the forces are the same in scenario A and scenario C, which ball would move fasted?

• The ball in scenario A.
• The ball in scenario C.
• They would move at the same speed.
• There is no way to tell.

In scenario A, a ball is being pushed along by a strong force. If the force was suddenly decreased (like in scenario B), what would happen to the motion of the ball?

• It would speed up
• It would slow down
• It would change direction
• It would remain the same

If a force is applied to the side of an object, the object will ________

• Slow down
• Speed up
• Change Direction
• Stop

A student is pushing a box of books across the floor.   The student stops, removes some of the books, and then continues pushing the box across the floor.    Which best explains how removing some of the books affected the motion of the object?

• Removing some of the books reduced the mass of the box, and less force was needed to push it across the floor.
• Removing some of the books reduced the mass of the box, and more force was needed to push it across the floor.
• Removing some of the books did not affect the amount of force needed to push it across the floor.
• Removing some of the books decreased the mass of the box, and the same amount of force was needed to push it across the floor.

Tags

NGSS.MS-PS2-2

A student uses the same force to launch a golf ball, a ping pong ball, a bowling ball, and a baseball on a track.    Which object will move the fastest?

• The golf ball
• The ping pong ball
• The bowling ball
• The baseball

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1