AP Physics C Mechanics Review

The area of a force vs position graph has units of...

• Newtons

• Kg

• Watts

• Joules

Which of the following are scalar quantities?

• velocity

• force

• energy

• angular momentum

The slope of a velocity vs time graph represents...

• distance

• displacement

• acceleration

• speed

A collision occurs on a level, friction surface with NO external forces. What is true about the V com ?

• It is usually less after the collision than before.

• It depends if there is any Q.

• The acceleration of the com is zero thank you very much.

• It depends if it is sticky or bouncy.

Tags

NGSS.HS-PS2-2

The work done by the net force equals the change in kinetic energy.

• TRUE

• FALSE

Tags

NGSS.HS-PS3-1

When a spinning figure skater (no external torques acting) brings her arms in toward her body, the angular momentum...

• Stays the same

• Increases

• Decreases

• Depends on if kinetic energy is conserved.

In a rolling race down a ramp, which object will reach the bottom first? There is plenty of friction and they are released at the same time.

• Hollow Disk

• Solid Sphere

• Solid Disk

• It depends on the radius and mass.

A 5.0 kg car moves to the right at 4 m/s. It experiences a net force of 10 N to the right for 3.0 seconds. The impulse is...

• 20 kg*m/s

• 50 kg* m/s

• 30 N*s

• -10 N*s

Tags

NGSS.HS-PS2-1

A solid sphere and a solid disk both have the same R and M. They are both rolling with a Vcom = 3 m/s. Which one has more rotational kinetic energy?

• Its the same!

• Solid Sphere has more Krot

• Solid Disk has more Krot

• I need to know specifically what M and R is to figure this one out!!

The slope of the graph of U(x) vs x has units of...

• Newtons

• Watts

• Kg*m/s

• Joules

Tags

NGSS.HS-PS2-4