3) An object traveling at 4 m/s accelerates at a constant rate. After 5 seconds, the velocity is 19 m/s. What is the acceleration?
Hint: Use this equation and solve for acceleration: V = V; + at

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