A car is traveling 20 kilometers an hour, then changes direction at a fork in the road. The action that the car takes changes its A.
velocity, but not its speed.

B.
speed, but not its velocity.

C.
acceleration, but not its velocity.

D.
speed, but not its acceleration.

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2