Question

Kinetic energy of a particle changes from 2 J to
5 J. The work done by forces acting on this particle
will be
(1) 2J
(2) 7J
(3) 5 J
(4) 3J​

Answer 1

Answer:

answer of this question is 3joule

bcz 5j-2j=3j

Answer 2

The work done by forces acting on the particle will be 3J

Given :

Kinetic energy of a particle changes from 2J to 5J.

To find :

The work done by forces acting on the particle will be

(1) 2J

(2) 7J

(3) 5J

(4) 3J

Solution :

Step 1 of 2 :

Calculate change in kinetic energy of the particle

Here it is given that Kinetic energy of a particle changes from 2J to 5J.

∴ Change in kinetic energy of the particle

= 5J - 2J

= 3J

Step 2 of 2 :

Find work done by forces acting on the particle

We know that the change in kinetic energy of a particle is equal to the work done by forces acting on the particle

∴ The work done by forces acting on the particle

= Change in kinetic energy of the particle

= 3J

Hence the correct option is (4) 3J

━━━━━━━━━━━━━━━━

Learn more from Brainly :-

$1.$ A particle moves in a circle of radius 4m with a linear speed of 20m/s. Find the angular speed.

https://brainly.in/question/16186270

2. What is the momentum of a 6.0 kg ball bowling with a velocity of 2.2 m/s?

https://brainly.in/question/24307189

#SPJ3