Question

the velocity of moving body is increased from 40 m/s to 50 m/s. If the mass of the body is 6 kg, then the change in momentum is

Answer 1

Answer:-

P = 60 kg m/s

Given :-

u = 40 m/s

v = 50 m/s

m = 6 kg

To find :-

The change in momentum.

Solution:-

Momentum → The product of mass and velocity of an object is called momentum.

From definition,

$\huge \boxed{P = mv }$

put the given values,

→$p_1 = 6 \times 40$

→$p_1 = 240 kg m/s$

Now,

→$p_2 = m\times v$

→$p_2 = 6 \times 50$

→$p_2 = 300 kg m/s$

Change in momentum will be :-

→$P = p_2 - p_1$

→$P = 300 - 240$

→$P = 60 kg m/s$

hence,

The change in momentum will be 60 kg m/s.

Answer 2

Answer:

The change in momentum is 60kg.

Explanation:

Given that,

u = 40m/s.

m = 6 kg.

v = 50m/s.

According to your Question,

We have to find:

The change in momentum.

We know that,

⭐P = m x v⭐

Now,Plug the given values,

=> P1 = 6 x 40

=>P1= 240kg m/s.

So,

=> P2 = m x v

=>P2 = 6 x 50

=> 300kg m/s.

So,

Change in momentum,

=> P1- P2

So,

=>300 -240 = 60

=>P = 60kg m/s.

Hence,

It implies that the change in momentum should be 60kg m/s.