Question

A man whose height is 90kg walks up a flight of stairs in 7seconds.if the distance covered is 8meters ,calculate

(a)The weight of the man

(b)Force exerted by the man

(c)The work done

(d)The rate at which the work is done

[take acceleration due to gravity=10meter per second square]

note:weight =mass multiplied by acceleration due to gravity.

Answer 1

Answer:

a.90×10=900

b.force exerted by man is 900N