Question

7. Solve the following problems.
(a) A force of 1000N was applied to
stop a car that was moving with a
constant velocity. The car stopped
after moving through 10m. How
much is the work done?
(b) A cart with mass 20 kg went 50m
in a straight line on a plain and
smooth road when a force of 2N
was applied to it. How much work
was done by the force? similar sum​

Answer 1

Answer:

Explanation:

A) work done =F.s

= -1000×10= -10000J. ( I took - sign for the force because it is opposite to direction of motion of the car)

B) work =F.s

= 2×50=100J