Question

The ratio of kinetic energy of a car and a truck
having the same speed of 60 ms - 1
and masses in
the ratio 1:4 will be
(a) 1:2
(b) 4:1
be) 1:4
(d) 2:1
​

Answer 1

Answer:

kinetick energy is =1/2mv²

so ke directly persportional to mass thus as the ratio of mass is as the ration of ke is

so answ 1:4

Answer 2

c) 1:4 is the correct option

k.e is directly proportional to mass

k.e=1/2 m v²