Force and Motion

What surface would probably offer the least friction if you were to slide a box across it?

• glass

• wood

• carpet

• brick

A boblsed glides across the ice and gradually begins to slow down.  Which force acts opposite to the bobsled's motion?

• lift

• weight

• gravity

• friction

The force of gravity acting on an object is the object's ______.

• Mass

• Matter

• Weight 

• Terminal velocity 

During a science experiment, a student dropped a metal ball from a height of 150 m. The graph shows the distance the metal ball traveled from its initial position to where it hit the ground.

What information does the graph give you about the speed of the metal ball over time?

• The ball travels at a constant speed.

• The speed of the ball increases over time.

• The speed of the ball decreases over time.

• e speed of the ball increases at first, and then decreases as time increases.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

A push or pull of an object is called __________________.

• force

• gravity

• energy

• friction

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

During which interval is the object speeding up?

• A to B

• B to C

• D to E

• E to F

Tags

NGSS.MS-PS3-1

This is a velocity-time graph.  What is the object doing in segment A?

• Positive acceleration

• Negative acceleration

• Constant Velocity

• Not moving

Tags

NGSS.MS-PS3-1

This is a velocity-time graph.  What is the object doing in segment C?

• Positive acceleration

• Negative acceleration

• Constant Velocity

• Not moving

Tags

NGSS.MS-PS3-1

Calculate the acceleration for segment A.

• 2 m/s²

• 20 m/s²

• -2 m/s²

• 0 m/s²

Tags

NGSS.MS-PS2-2

What does this graph represent?

• Constant speed

• Acceleration

• Not moving

Tags

NGSS.MS-PS3-1