SATHEE: Laws of Motion - Result Question 13

Laws of Motion - Result Question 13

13. A ball of mass $150 g$ , moving with an acceleration $20 m / s^{2}$ , is hit by a force, which acts on it for 0.1 sec. The impulsive force is

[1996]

(a) $0.5 N$

(b) $0.1 N$

(c) $0.3 N$

(d) $1.2 N$

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Answer:

Correct Answer: 13. (c)

Solution:

(c) Mass $= 150 g m = \frac{150}{1000} k g$

Force $=$ Mass $\times$ acceleration

$= \frac{150}{1000} \times 20 N = 3 N$

Impulsive force $= F \cdot Δ t = 3 \times 0.1 = 0.3 N$

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Laws of Motion - Result Question 13

13. A ball of mass 150g, moving with an acceleration 20m/s2, is hit by a force, which acts on it for 0.1 sec. The impulsive force is

Answer:

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13. A ball of mass $150 g$ , moving with an acceleration $20 m / s^{2}$ , is hit by a force, which acts on it for 0.1 sec. The impulsive force is