Question

When 150 joules of work is done on a system by an external force of 15 newtons in 20. seconds, the total energy of that system increases by.
(1) 1.5 × 102 J
(2) 2.0 × 102 J
(3) 3.0 × 102 J
(4) 2.3 × 103 J

Please include an explanation

Answer 1

Answer:

1.5 × $10^2$ J

Explanation:

The initial force, which in this case is the external force is equal to 15N. Logically, when 150 Joules of work is done upon that system the overall energy will increase by that very same amount of work applied on the system which is 150 J.