Question

7) The object of mass 2kg its moving with kinetic energy is 1001, then momentum is (kg ms ) a) 20 b) 2 c) 0.2 d) 100​

Answer 1

Answer:

Given:mass(m)=2kg, momentum(p)=2Ns

we know; p=mv

v=

m

p

v=1ms

−1

Kinetic energy (K.E) =

2

1

mv

2

,

K.E=

2

1

pv

K.E=

2

1

×2×1

K.E=1J