Question

a body acted upon by a force must have​

Answer 1

Explanation:

1. When there is no force or no displacement.. or the direction of displacement is perpendicular to the direction of force then the work done is zero. 2. When the displacement is zero OR when the force acts at right angles to the direction of the displacement then the work done is zero.

Answer 2

Answer:Solution

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Correct option is

C

A  

2

​

 

As the acceleration of force F is A,

so the resultant acceleration ,A  

R

​

=  

A  

2

+A  

2

 

​

=A  

2

​

 

solution

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