Question

 If a body is moved a distance of 20m by a force of 2.5N, calculate the energy spend in joule. 

please send me the process
then I will mark you a brainliest​

Answer 1

Answer:

Answer

Correct option is

C

2 ms

−2

F = 10 N, m = 5 kg

Putting the values in F=m×a

10=5×a

a=2m/s

2

Answer 2

Answer:

TopperLearning Logo

Topperlearning

ICSE Class 10

Selina Solutions

Physics

Work, Energy and Power

SELINA Solutions for Class 10 Physics Chapter 2 - Work, Energy and Power

In ICSE Class 10, Physics is one of the most important subjects, as the fundamentals learnt also assist students to clear the competitive exams like IIT-JEE and NEET. TopperLearning provides ICSE Class 10 Physics students with robust study materials to help them to score well in the examination. Our study materials are created by subject experts and provide better insight on how to prepare for the ICSE Class 10 Physics examination.

Page / Exercise

Ex. 2A Ex. 2B Ex. 2C

Chapter 2 - Work, Energy and Power Exercise Ex. 2A

Question 1

Define work. When is work said to be done by a force?

Solution 1

Work is said to be done only when the force applied on a body makes the body move. It is a scalar quantity.

Question 2

One horse power is equal to:

a. 1000 W

b. 500 W

c. 764 W

d. 746 W

Solution 2

746 W

Question 3

A body, when acted upon by a force of 10 kgf, gets displaced by 0.5 m. Calculate the work done by the force, when the displacement is (i) in the direction of force, (ii) at an angle of 60o with the force, and (iii) normal to the force. (g= 10Nkg-1)

Solution 3

Force acting on the body = 10 kgf = 10 x 10 N = 100 N

Displacement, S=0.5 m

Work done= force x displacement in the direction of force

(i)W =F x S

W = 100 x 0.5= 50 J