Question

A body of mass 5 kg is moving with a velocity of 10 m/s. A force is applied to it so,that in 25 second ,it attains a velocity of 35 m/s. calculate the value of force applied.
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Answer 1

Answer:

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Answer 2

Answer:

A body of mass 5 kg is moving with a velocity of 10 m/s. A force is applied to it so, that in 25 seconds, it attains a velocity of 35 m/s, the value of force applied is $5N$

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Explanation:

• From Newton's second law $F=ma$

• The acceleration is the change in velocity with time $a=(v-u)/t$

From the question, we have

mass of the body $m=5kg$

the initial velocity of the body $u=10m/s$

the final velocity $v=35m/s$

time taken for this change $t=25s$

⇒ the acceleration of the body

$a=\frac{35-10}{2} =1m/s^{2}$

now force on the body $F=5*1=5N$