When an increase in speed doubles the momentum of a moving body, its kinetic energy (a) increases, but less than doubles. (b) doubles. (c) more than doubles. (d) depends on factors not stated. Exert...

When an increase in speed doubles the momentum of a moving body, its kinetic energy

(a) increases, but less than doubles.

(b) doubles.

(c) more than doubles.

(d) depends on factors not stated.

Exert 100 J in 50 s, and your power output is

(a) ¼ W.

(b) ½ W.

(c) 2 W.

(d) 4 W.