Question

A force of 980 N acts on a body for 0.1 seconds. Calculate the change in momentum of the body.
(1)98 Ns
(2) 9.8 NS
(3) 0.98 NS
(4) 980 NS

Answer 1

$\bf{\huge{\boxed{\underline{\mathbb{\green{Answer:}}}}}}$

98 Ns 【 option (1) 】

Given :→

F = 980N

t = 0.1sec

To Find :→

Change in momentum (Δp)

Momentum is mass in motion, and any moving object can have momentum. An object's change in momentum is equal to its impulse

Solution:

W.k.t

$\boxed{\bold{\pink{Δp = Ft}}}$

$\tt{Δp = 980N \times 0.1s }$

$\tt{Δp = 98Ns }$

Answer 2

(1) The change of momentum of the body is 98 Ns

Explanation:

Given Force acts on a body, F = 980 N

                                     Time, t = 0.1 s.

If a force acts on a body for a time t, then change of momentum of the body is given by

$\delta p=F\times t$

It is also called impulse.

Here, $\delta p$ change in momentum.

Substitute the given values, we get

$\delta p= 980 N\times 0.1s$

$\delta p= 98Ns$

Thus, the change of momentum of the body is 98 Ns

Learn more: Topic :Change in momentum

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