Which of the following is not an appropriate unit for power ?
horsepower
watt
joule/sec
newton/sec

Newton/sec is not appropriate unit for power.

(d) is correct option.

Explanation:

Power :

Power is equal to the energy divided by time.

In mathematical term,

Where, E = energy

t = time

The unit of power is Joule/sec.

The power is equal to the work divided by time.

In mathematical term,

Where, W = work

t = time

The unit of power is Watt.

Therefore,

The unit of power is watt, horsepower and joule/s.

Hence, Newton/sec is not appropriate unit for power.

your answer is c! hope this : )

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.