Question

A cart with mass $20kg$ 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?

• A. $100J$
• B. $200J$
• C. $300J$
• D. $400J$

Answer 1

The correct option is A $100J$

Step 1: Given
Force, $F=2N$
Displacement, $s=50m$
Mass, $m=20kg$

Step 2: Formula used

Work done $\left(W\right)$ is the product of force and displacement along the force.

$W=Fs$

Step 3: Finding the work done
Since the cart is moving due to the application of force, its displacement is along the force.
Work done is positive because the displacement is in the same direction of the applied force.

$W=2N\times 50m=100J$

Hence, the work done by the force is 100J.