Physics Review (Collisions, Momentum, Energy, Work, Power, Heat, and Waves)

An object has 15 Kg*m/s of momentum and a mass of 5 Kg. What is the objects velocity

• 75 m/s

• 5 m/s

• 3 m/s

• 15 m/s

Tags

NGSS.HS-PS2-2

A bug is flying through the countryside. The bug flies into a sign with a force of 200 N that takes 0.02 secs to crush it. What is the impulse?

• .04 N*s

• 10,000 N*s

• 4 N*s

• 9.8 N*s

A girl pushes a 20 Kg cart through the a building 5 m with a force 5 N. How much work is accomplished?

• 100 J

• 25 J

• 4 J

• 500 J

Tags

NGSS.HS-PS3-1

What is the potential energy of a 20 Kg car moving 65 m/s on level ground?

• 42, 250 J

• 84, 500 J

• 0 J

• 9.8 J

What is the kinetic energy of a 20 Kg car speeding down a 20 m high mountain at 30 m/s?

• 9,000 J

• 3,920 J

• 12,920 J

• 5,080 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

A 55 kg boy takes 5 seconds to run up the stairs 10 m. What is the power used to run up the stairs?

• 5,390 W

• 1,078 W

• 110 W

• 539 W

A 15 Kg car moving at 2 m/s crashes into 10 Kg at rest bouncing back at a velocity of 0.5 m/s. What is the final velocity of the 10 Kg car?

• 7.5 m/s

• 5 m/s

• 2.25 m/s

• 4 m/s

Tags

NGSS.HS-PS2-2

A 400 Kg truck rushing through the street at 20 m/s crashes into a 50 Kg car making a turn at 2 m/s. The car is stuck to the bottom of the truck, what is the final velocity?

• 90 m/s

• 0 m/s

• 9 m/s

• 18 m/s

Tags

NGSS.HS-PS2-2

Which one of the following is different from the others?

• Microwaves

• Infrared

• Radio waves

• Sound waves

Tags

NGSS.HS-PS4-3

If the red car's output is the same as the blue car's output and the blue car's output is the same as the yellow car then the red car's output the same as the yellow car. Which law of thermodynamics is demonstrated here?

• Zeroth Law

• First Law

• Second Law

• Third Law