Acar traveling at a constant speed of 30 m/s passes a highway patrol police car which is at rest. the police officer accelerates at a constant rate of 3.0 m/s2 and maintains this rate of acceleration until he pulls next to the speeding car. assume that the police car starts moving at the moment the speeder passes his car. determine the – a) time required for the police officer to catch the speeder and – b) distance traveled during the chase.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j ?

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

Which accurately compares concave and convex lenses?