Question

a motorcycle has a kinetic energy will change if it's mass become thrice and velocity becomes half​

Answer 1

ANSWER

The energy possessed by a body because of its motion, equal to one half the mass of the body times the square of its speed is called its kinetic energy.

K=  

2

1

​  

mv  

2

 

When, v=2v,

K  

′

=  

2

1

​  

m(2v)  

2

 

K  

′

=4×  

2

1

​  

mv  

2

 

K  

′

=4K

Hence, when velocity is doubled, kinetic energy becomes 4 times.