Question:
The force to be applied to a body of mass $200\ \text{g}$ to change its velocity by $25\ \text{m s}^{-1}$ in $5\ \text{s}$ is:
The force to be applied to a body of mass $200\ \text{g}$ to change its velocity by $25\ \text{m s}^{-1}$ in $5\ \text{s}$ is:
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Always convert mass to kilograms (SI unit) before calculating force in Newtons.
Updated On: Apr 28, 2026
- 2.5 N
- 50 N
- 3 N
- 30 N
- 1 N
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The Correct Option is
Solution and Explanation
Step 1: Concept
Force $F = ma = m \frac{\Delta v}{\Delta t}$.
Step 2: Analysis
Mass $m = 200\ g = 0.2\ kg$. Change in velocity $\Delta v = 25\ ms^{-1}$, time $\Delta t = 5\ s$.
Step 3: Calculation
$F = 0.2 \times \frac{25}{5} = 0.2 \times 5 = 1\ N$. Final Answer: (E)
Force $F = ma = m \frac{\Delta v}{\Delta t}$.
Step 2: Analysis
Mass $m = 200\ g = 0.2\ kg$. Change in velocity $\Delta v = 25\ ms^{-1}$, time $\Delta t = 5\ s$.
Step 3: Calculation
$F = 0.2 \times \frac{25}{5} = 0.2 \times 5 = 1\ N$. Final Answer: (E)
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