SATHEE: Laws Of Motion Question 221

Laws Of Motion Question 221

Question: The average resisting force that must act on a 5 kg mass to reduce its speed from 65 cm/s to 15 cm/s in 0.2s is [RPET 2000]

Options:

A) 12.5 N

B) 25 N

C) 50 N

D) 100 N

Show Answer

Answer:

Correct Answer: A

Solution:

$F = m (\frac{v - u}{t}) = \frac{5 (65 - 15) \times 10^{- 2}}{0.2} = 12.5 N$

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Laws Of Motion Question 221

Question: The average resisting force that must act on a 5 kg mass to reduce its speed from 65 cm/s to 15 cm/s in 0.2s is [RPET 2000]

Options:

Answer:

Solution:

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