Question

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

Answer 1

f=m×a (a=v-u/t)
f=5×(35-10/25)
f=5×(25/25)
f=5×(1)
f=5×1
f=5N

Answer 2

Answer:

Explanation:

Given :-

Mass of the body, m = 5 kg

Initial speed of the body, u = 10 m/s

Final speed of the body, v = 35 m/s

Time taken by the body, t = 25 seconds

To Calculate :-

Value of the force applied.

Formula to be used :-

1st equation of Motion i.e v = u + at

Force Formula i.e F = m × a

Solution :-

Putting all the values, we get

⇒ v = u + at

⇒ 35 = 10 + a × 25

⇒ 35 = 10 + 25 a

⇒ 35 − 10 = 25 a

⇒ 25 = 25 a

⇒ a = 25/25

⇒ a = 1 m/s²

Putting acceleration value, we get

⇒ Force = mass × acceleration

⇒  Force = m × a

⇒  Force = 5 × 1

⇒  Force = 5 Newton

Hence, the value of the force applied is 5 Newton.