Momentum and Acceleration

If an object is accelerating, there is a force present.

• True

• False

Tags

NGSS.HS-PS2-1

Which of these graphs show a constant velocity?

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• 
• 
• 

Which of these graphs show acceleration?

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• 
• 
• 

Tags

NGSS.HS-PS2-1

A shark is swimming at a speed of 14m/s until it senses a fish and speeds up up at a rate of 20m/s and catches it in 3 seconds. What was the shark's acceleration?

• 10 m/s²

• 0.5 m/s²

• 2m/s²

• 5 m/s²

Tags

NGSS.HS-PS2-1

Which one of these is the definition for acceleration?

• A change in velocity over time.

• A certain distance covered during a second.

• The product of mass and velocity.

• The amount of energy required to stop an object.

Tags

NGSS.HS-PS2-1

If velocity changes, momentum changes, therefore a force is present.

• True

• False

Tags

NGSS.HS-PS2-1

A stunt car crashes into a wall with a momentum of 46,500Ns. The mass of the car is 1,500 kg. How fast was the car going?

• 54 m/s

• 120 m/s

• 15 m/s

• 31 m/s

Tags

NGSS.HS-PS2-2

If a car is going at a constant velocity, does the car have a change in momentum?

• Yes

• No

• Maybe

• Not enough information

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

For an object to have force, it needs... (select all that apply)

• A change in velocity

• A change in momentum

• An acceleration

• None of the above

• A Jedi

Tags

NGSS.HS-PS2-1

A 2kg ball is rolling down the street at a speed of 5 m/s. It eventually rolls down a hill and speeds up to 10 m/s. What was the ball's change in momentum?

• 30 kg*m/s

• 10 kg*m/s

• 25 kg*m/s

• 100 kg*m/s

Tags

NGSS.HS-PS2-2