Question

if mass = 100 kg , K . E = 20 J then velocity​

Answer 1

Answer:

Let v be the velocity of object

Mass of object , m=100 g=0.1 kg

Kinetic energy of object =20 J

⟹

2

1

×0.1v

2

=20

⟹v

2

=400

⟹v=20 m/s

Answer 2

Answer:

square root of 4/ 10

Explanation:

kinetic energy = 1/2 m v^2

v^2 =2 × K.E/m

= 2× 20/100

v = square root of 4 /10