Question

Q11. The kinetic energy of a body of
mass 15 kg is 30 j. What its momentum​

Answer 1

Answer:

K.E=30 J

m=15 kg

we know,

K.E=1/2 mv²

30= 1/2 ×15× v²

v²=30×2÷15

v=√4=2 m/s

Hence,

momentum (p) =mv

p=15×2

p=30 kgm/s

Answer 2

Explanation:

1÷2mv^2=30j

1/2*15v^2=30j

15v^2=60

v=60/15^1/2 : root over 4

v=2

p=mv

p=15*2

p=30