Question

if mass and velocity of a body is doubled how will its kinetic energy changes
​

Answer 1

Answer:

Answer:Momentum is directly proportional to velocity. If momentum of an object is doubled , but its mass does not increase (so velocity remains below the speed of light) then its velocity is doubled. If the velocity is doubled, then the kinetic energy increases by four times.

Hope this helped u ✌️✌️

Answer 2

Answer:

8 times

Explanation:

kinetic energy = 1/2mv^2

let the mass be 2m and velocity be 2v

then,

kinetic energy = 1/2 × 2m × (2v)^2

= 1/2 ×2m× 4v^2

=8(1/2mv^2)

so, kinetic energy increase by 8 times