Question

Two toy cars A and B of masses 200g and 500g respectively are moving with the same speed . Which of the 2 has greater kinetic energy?

Answer 1

Answer:

The Kinetic Energy possessed by body of 500 g is higher than the body of 200 g.

Explanation:

$(1)K.E.1=\frac{1}{2}m{v}^2$

$K.E.1=\frac{1}{2}*0.2*{v}^2$

$K.E.1=0.2{v}^2$

$K.E.1=0.20{v}^2$

$(2)K.E.2=\frac{1}{2}m{v}^2Joules$

$K.E.2=\frac{1}{2}*0.5*{v}^2$

$K.E.2=\frac{0.5{v}^2}{2}$

$K.E.2=0.25{v}^2Joules$