Physics

Problem

Four identical carts move horizontally with the instantaneous velocities shown. A horizontal force of the stated magnitude and direction acts on each cart at that instant. A.

5\,\text N

east on a cart moving

1.5\,\text{m/s}

east B.

8\,\text N

east on a cart moving

1.0\,\text{m/s}

west C.

6\,\text N

directed

30^{\circ}

north of east on a cart moving

2.0\,\text{m/s}

east D.

4\,\text N

east on a cart moving

3.5\,\text{m/s}

east Which force–cart combination results in the greatest instantaneous power delivered to the cart? a)

B

C

D

A

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