What net force (in N) gives a mass an acceleration of ?

Answer and explanation

Correct answer: B. 6

**
  1. Step 1: Apply Newton's second law: .
  2. Step 2: Insert and : .
  3. Step 3: Multiplying yields the required net force of .
Answer
6.
Why not the others: '60' introduces an extra factor of , confusing acceleration with ; '3/2' divides mass by acceleration () instead of multiplying; '5' adds mass and acceleration () instead of multiplying them.

Practise more Laws of motion.

Free questions with an explanation for every one, and full timed JEE Main mock tests.