Question

Q.3 write true or false and correct the false statement 1) When angle between the force and displacement is 180°, we say positive work is done.​

Answer 1

Answer:

false

Explanation:

falsejsgvsjzskmwnshsjs

Answer 2

Answer:

FALSE

Work done is negative

Explanation:

1. Theta=0°; Work done= +ve

2. Theta=90°; Work done= ZERO

3. Theta=180°; Work done= -ve

For ex.

1. Motion of a ball when falling vertically downwards

2. Motion of a ball in uniform circular motion

3. Motion of a ball when projected vertically upwards