Jamal is skating on a sidewalk. his initial velocity is 0.0 m/s; 35 seconds later his velocity is 5.0 m/s. what is his acceleration?
7 m/s
-7 m/s
0.14 m/s/s
-0.14 m/s/s

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