Rotational Motion AP Physics

As you are leaving a building, the door opens outward. If the hinges on the door are on your right, what is the direction of the angular velocity of the door as you open it?

• Up

• Down

• to your right

• to your left

It will be same for all points of rotating body.

• Angular displacement

• Angular acceleration

• Angular velocity

• Arc length

If sign of angular velocity and acceleration are opposite then angular velocity of object:

• speeding up

• slowing down

• will be same

• not enough information given

If the object is rotating counter clockwise and the value of ω₁ is bigger than ω_{2 ,} what would be the direction of angular acceleration?

• Up

• Down

• Left

• Right

What is ∆ϴ stand for?

• change in Angular velocity

• Change in Angular acceleration

• Change in Angular displacement

• Change in Arc length

What is α (alpha) stand for?

• Angular velocity

• Angular displacement

• radius

• Angular acceleration

A point that rotates around an axis undergoes

• Rotational motion

• Circular motion

• Linear motion

• Rectilinear motion

Angular velocity is ____________________ to the plane.

• Parallel

• Perpendicular

• Tangential

• Don't know

How long does it take for a rotating object to speed up from 15.0 rad/s to 33.3 rad/s if it has a uniform angular acceleration of 3.45 rad/s²?

• 4.35 s

• 5.30 s

• 10.6 s

• 63.1 s

What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?

• 5 m/s²

• 17.63 m/s²

• 10 m/s²

• 8.81 m/s²