Q. The two blocks, m1 = 1.40 kg and m2 = 5, are connected by a mass less rope that passes over a pulley. The pulley is 12 cm in diameter and has a mass of 2.0 kg. As the pulley turns, friction at the axle exerts a torque of magnitude 0.44 N•m. If the blocks are released from rest, how long does it take 5.0 kg block to reach the floor from a height of h = 1 m?

Q. The position of a particle moving along the x axis is given in centimeters by x = 5.50 + 2.50t^3, where t is in seconds. Consider time interval t = 2.00 s to t = 3.00 s.

compute average velocity.

Compute the instantaneous velocity at t = 2.00 s.