An object moves with an acceleration of 3 m s−2 when a force of

Question

An object moves with an acceleration of

3 {m s}^{- 2}

when a force of

30 N

is applied. The mass of the body is:

Options:

A . 30 kg

B . 20 kg

C . 40 kg

D . 10 kg

Answer: Option D
:
D
Given, force,

F = 30 N

and acceleration,

a = 3 {m s}^{- 2}

.
Let m be the mass of the body.
We know,

F = m a

(Newtons's second law of motion)

∴

m = \frac{F}{a} = \frac{30}{3} = 10 k g

Therefore, mass of the body is

10 k g

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