A body of mass 10 kg is moving with a velocity of 100 m/s. Find the force needed to stop it in 5 seconds.
Give correct answer.
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Answer:
-200 N
Explanation:
As per the provided information in the given question, we have :
- Mass of the body (m) = 10 kg
- Initial velocity (u) = 100 m/s
- Time taken (t) = 5 seconds
- Final velocity (v) = 0 (As it stops)
We are asked to calculate the force need to stop it.
In order to calculate force, we need to calculate the acceleration first.As we know that,
→ a =
- a denotes acceleration
- v denotes final velocity
- u denotes initial velocity
- t denotes time
→ a =
→ a =
→ a =
Therefore, the acceleration is .
Now, finding force applied.
★ F = ma
- F denotes force
- m denotes mass
- a denotes acceleration
→ F = 10 × (-20) N
→ F = -200 N
Therefore, force needed to stop it is -200N. Negative sign implies that it should be applied in the opposite direction.
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