Physics Final Review

At which point does the car have it's highest potential energy?

• x

• a

• b

• d

Tags

NGSS.HS-PS3-2

At which point does the car have it's highest kinetic energy?

• x

• a

• b

• d

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

If point B is the fastest the roller coaster will go and it has 6,000,000 Joules of kinetic energy, how much potential energy did the roller coaster have?

• 0 Joules

• 6,000,000 Joules

• 3,000,000 Joules

• 12,000,000 Joules

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

If at point x, PE = 6,000,000 and the roller coaster has max kinetic energy at point b, how much potential energy does the cart roughly have at point A?

• 0 Joules

• 6,000,000 Joules

• 3,000,000 Joules

• 12,000,000 Joules

Tags

NGSS.HS-PS3-1

A 115.67 kg linebacker running at 7.62 m/s tackles a 90.26 kg receiver as he comes down from a jumping catch. What is the velocity of the two football players after the collision?

m1v1(initial) + m2v2(initial) = v(final)(m1+m2)

• 4.28 m/s

• 3.81 m/s

• 7.62 m/s

• 2.07 m/s

Tags

NGSS.HS-PS2-2

Assume this 95 kg man on the skateboard is at rest; not moving. If he were to toss his 19 kg backpack forward at 6.7 m/s, at what velocity would he roll back with?

m1v3 = -m2v4

• -1.34 m/s

• -1.16 m/s

• -32.3 m/s

• 6.7 m/s

Tags

NGSS.HS-PS2-2

The Law of Conservation of Energy states that energy is never __________________ or _________________, only transferred.

• created, destroyed

• created, subtracted

• added, subtracted

• destroyed, subtracted

Which of the following statements is not correct concerning momentum?

• Momentum is a vector quantity.

• An object moving at a constant speed has momentum.

• If an object's velocity changes, then its momentum will also change.

• Momentum is never conserved.

Tags

NGSS.HS-PS2-2

According to the Law of Conservation of Momentum, when two objects collide:

• both objects lose momentum.

• both objects gain momentum

• momentum is neither lost nor gained.

• momentum is always lost or gainer.

Tags

NGSS.HS-PS2-2

Imagine they add a clown to a circus car every six seconds. What would happen to the speed of the car if they maintained a constant momentum of 36,000 kg·m/sec.

• The speed of the car would decrease because of conservation of momentum.

• The speed of the car would increase because of conservation of momentum.

• The speed of the car would decrease because of conservation of energy.

• The speed of the car would increase because of conservation of energy.

Tags

NGSS.HS-PS2-2