Question:
A force of 20 N is applied to push a 4 kg block on a frictionless surface. What is the acceleration of the block?
A force of 20 N is applied to push a 4 kg block on a frictionless surface. What is the acceleration of the block?
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Always use $ F = ma $ to relate force, mass, and acceleration in mechanics problems.
Updated On: May 24, 2025
- 2 m/s²
- 4 m/s²
- 5 m/s²
- 6 m/s²
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The Correct Option is C
Solution and Explanation
Use Newton’s Second Law:
$$
F = ma \Rightarrow a = \frac{F}{m}
$$
Substituting values $ F = 20 \, \text{N}, m = 4 \, \text{kg} $: $$ a = \frac{20}{4} = 5 \, \text{m/s}^2 $$
Substituting values $ F = 20 \, \text{N}, m = 4 \, \text{kg} $: $$ a = \frac{20}{4} = 5 \, \text{m/s}^2 $$
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