Question

when the velocity and mass of an object is doubled the ratio of integrity energy Ki to the modified kinetic energy Km is
option -- 1:4
1:8
8:1
1:2​

Answer 1

Answer:

Let KE=

2

1

mv

2

Given, m

1

=2m and v

1

=2v

∴KE

1

=

2

1

m

1

(v

1

)

2

=

2

1

×2m×(2v)

2

=

2

1

×8mv

2

=8KE

∴ KE of the body becomes 8 times.