A wheel rolled 4 revolutions. What is the angular displacement?
8π
100
center seeking
What does the word "centripetal" mean?
200
angular acceleration's symbol
alpha (α)
200
What is the unit for angular acceleration
radians per second squared
200
What is the unit conversion of revolution to the angular displacement.
1 revolution = 2π radians
200
The ball rolled from rest to 72rad/s from 2seconds to 10seconds. What is the angular acceleration?
9rad/s squared
200
DOUBLE JEOPARDY
What is the formula for centripetal force?
Remember that F = ma.
Fc = ma (subscript c)
300
angular displacement
theta (θ)
300
What is the unit for tangential velocity?
meters per second (m/s)
300
What is the formula of angular acceleration?
α = ω / t
300
The ball rolled 38rad/s to rest within 5seconds. What is the angular acceleration?
- 7.6 rad/ s squared
300
The angular velocity was 104 radians per second. If diameter of a wheel is 16 meters, what is the tangential velocity?
13m/s
400
tangential acceleration's symbol
v subscript t
400
What is the unit for tangential acceleration
meters per second squared
400
What is the formula for centripetal acceleration
ac = v^2 / r
400
A horse on a merry-go-round started with an initial displacement of 2π radians and finished at a final displacement of 12π radians after 30seconds. What is the angular displacement?
10pi radians
400
The tangential velocity of a ball being spun around is 55m/s. What is the centripetal acceleration if the distance from the center is .25m?
12100 meters per second squared
500
centripetal acceleration's symbol
a subscript c
500
What is the unit for centripetal acceleration?
meters per second squared
500
What is the formula for the arc length?
s = θ r
500
The ball rolled for 3m. The radius of the ball is 2m. What is the angular displacement?
1.5radians
500
A ball being spun around from an initial displacement of 9 rad and a final displacement of 17 rad within 2 seconds. What is the tangential velocity if the distance from the center is 2meters?