Question

A student pushes a 40-N block across the floor for a distance of 10 m. How much work was applied to move the block? A. 4 J B. 40 J C. 400 J D. 4000 J

Answer 1

C) 400J

Step-by-step explanation:

I did the test.

Answer 2

Answer: The correct answer is option(B).

Step-by-step explanation:

Force applied on the block = 40 N

Displacement of the block = 10 m

Work done is defined as product of force applied on an object into displacement of an object.

Work done =
`Force* Displacement`

Work done to move the block:
`40 N* 10 m= 40 N m=40 Joules`

40 Joules of work was applied to move the block . Hence, the correct answer is option (B).