Speed, Acceleration, and Free Fall

What is the velocity of an object at rest?

• 0.0 m/s

• 9.8 m/s

• 1.0 m/s

• 9.81 m/s

Which of the following units is the SI unit of velocity?

• m

• m/s²

• m/s

• s/m

What is the SI unit of acceleration?

• m/s

• m²/s

• m/s²

• M

In the graph above, a toy car rolls from +3 m to +5 m and back to +2 m. What is the distance traveled by the toy car?

• 2 m

• 3 m

During which interval is the cat at rest?

• 0.0-5.0 s

• 10.0-15.0 s

• 15.0-20.0 s

Tags

NGSS.HS-PS2-1

During which interval does the cat have a positive velocity?

• 0.0-5.0 s

• 10.0-15.0 s

• 15.0-20.0 s

A sailboat starts from rest and accelerates at a rate of 0.21m/s² over a distance of 280m. What is the magnitude of the boat's final velocity?

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Tags

NGSS.HS-PS2-1

During which interval is the car at rest?

• 0.0-1.0 s

• 3.0-4.0 s

• 4.0-5.0 s

The slope of the line of a position versus time graph describes what concept?

• acceleration

• displacement

The slope of the line of a velocity versus time graph describes what concept?

• acceleration

• displacement

• velocity

Tags

NGSS.HS-PS2-1