Sixty five Watt is equal to...?

Question

Sixty five Watt is equal to:

a) 65 kg.m3/s2

b) 65 kg.m2/s3

c) 65 kg/m.s

d) 65 kg.m2/s

Thanks!

Answer 1

65 kg.m2/s3

Answer 2

option b. power is given by the amount of work done divided by time and the is given in joules which is Kg.m^2/s^2 and if you divide that by seconds you get option b.

Answer 3

1 watt = 1 joule/second [power = work / time]

1 joule = 1 newton.meter     [work = force * distance]

1 newton = 1 kg.m/s^2        [force = mass * acceleration]

Going backwards:

1 joule = 1 kg.m^2/s^2

1 W = 1 kg.m^2/s^3

So 65 W = ..............