One-Dimensional Motion

What is the displacement of an object at rest?

• 0 m
• 1 m
• 9.8 m
• 9.81 m

What is velocity?

• The total distance traveled by an object
• The distance from start to end, including the direction
• How fast an object travels
• The speed at which an object travels plus its direction

A trucker drives with an average velocity of 27 m/s towards the east on a perfectly straight highway. What will the trucker's displacement be after 2 minutes?

• 97 m; east

• 190 m; east

• 1600 m; east

• 3200 m; east

What is acceleration?

• It is the displacement.
• It is the velocity.
• It is the rate of change of the displacement.
• It is the rate of change of the velocity.

Tags

NGSS.HS-PS2-1

What happens to an object's motion when the velocity is positive and the acceleration is negative?

• The object slows down.
• The object speeds up.
• The object remains at a constant velocity.
• The object remains at rest.

Tags

NGSS.HS-PS2-1

A race car accelerates from 0 m/s to 30 m/s with a 45 m displacement. What is the vehicle's acceleration?

• 2 m/s²
• 5 m/s²
• 10 m/s²
• 15 m/s²

Tags

NGSS.HS-PS2-1

The slope on a position vs time graph represents

• displacement

• velocity

• acceleration

• cannot be determined

A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?

• 10 m/s
• 1000 m/s
• 100 seconds
• 10 seconds

What does this graph represent?

• Constant Speed
• Acceleration
• Not moving

Which runner won this 10 m race?

• A
• B
• C
• It was a tie

Tags

NGSS.MS-PS3-1