Question

An object of mass 200g moving with velocity 50m/s . Calculate its kinetic energy

Answer 1

Answer=>>

K.E = 1/2mv² = 0.05 J

m = 200 g

    = 0.2 kg

v = = 50 cm/s

     = 0.5 m/s

K.E = 1/2 × 0.2× 0.5

   = 0.5×0.2×0.5 = 0.05 J

$\boxed{K.E= 0.05J}$

Answer 2

Answer:

mass= 200g = 0.2kg

Velocity=50m/s

Momentum =  Mass x velocity

= 0.2 x 50

= 2/10 x 50

= 10kg m/s

Explanation: