A horse pulls a cart for the first with a force of and for the next with a force of

PHYSICS · Single correct · CBSE · Physics · Work and Energy · Work and Energy

Problem

A horse pulls a cart for the first

20\,\text{m}

with a force of

400\,\text{N}

and for the next

20\,\text{m}

with a force of

300\,\text{N}

. The entire

40\,\text{m}

journey takes

16\,\text{s}

. What is the average power developed by the horse? (a)

700\,\text{W}

(b)

1000\,\text{W}

(c)

875\,\text{W}

(d)

560\,\text{W}