SATHEE: Work Energy And Power Question 102

Work Energy And Power Question 102

Question: A ball of weight 0.1 kg coming with speed 30 m/s strikes with a bat and returns in opposite direction with speed 40 m/s, then the impulse is (Taking final velocity as positive) [AFMC 1997]

Options:

A) $- 0.1 \times (40) - 0.1 \times (30)$

B) $0.1 \times (40) - 0.1 \times (- 30)$

C) $0.1 \times (40) + 0.1 \times (- 30)$

D) $0.1 \times (40) - 0.1 \times (20)$

Show Answer

Answer:

Correct Answer: B

Solution:

Impulse = change in momentum $m v_{2} - m v_{1}$ = $0.1 \times 40 - 0.1 \times (- 30)$

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Work Energy And Power Question 102

Question: A ball of weight 0.1 kg coming with speed 30 m/s strikes with a bat and returns in opposite direction with speed 40 m/s, then the impulse is (Taking final velocity as positive) [AFMC 1997]

Options:

Answer:

Solution:

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