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Sagot :
Statement:
A force is required to accelerate a 600 g ball from rest to 14 m/s in 0.1 s.
To find out:
The force required to accelerate the ball.
Solution:
- Mass of the ball (m) = 600 g = 0.6 Kg
- Initial velocity (u) = 0 m/s [it was at rest]
- Final velocity (v) = 14 m/s
- Time (t) = 0.1 s
- Let the acceleration be a.
- We know the equation of motion,
- v = u + at
- Therefore, putting the values in the above formula, we get
- 14 m/s = 0 m/s + a × 0.1 s
- or, 14 m/s ÷ 0.1 s = a
- or, a = 140 m/s²
- Let the force be F.
- We know, the formula : F = ma
- Putting the values in the above formula, we get
- F = 0.6 Kg × 140 m/s²
- or, F = 84 N
Answer:
The force required to accelerate the ball is 84 N and this force acts along the direction of motion.
Hope you could understand.
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