On a bike, a metal chain connects the front gear sprocket to the rear gear sprocket so that the back wheel can rotate as you pedal. Suppose the front gear sprocket of your bike has a radius of 11 cm and the rear gear sprocket has a radius of 2.5 cm. As you pedal, starting from rest, the front sprocket accelerates with a constant 25 rad/s 2 angular acceleration for 1.5 revolutions. What is the angular velocity of the rear gear sprocket after the 1.5 revolutions

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative