Answer:
Ball A has more KE
Explanation:
The kinetic energy of an object is the energy possessed by the object due to its motion, and it is calculated as
[tex]KE=\frac{1}{2}mv^2[/tex]
where
m is the mass of the object
v is its speed
In this problem we have, for ball A:
m =1 kg
v = 2 m/s
So, the kinetic energy of ball A is
[tex]KE_A=\frac{1}{2}(1)(2)^2=2 J[/tex]
For ball B we have
m = 2 kg
v = 1 m/s
So the kinetic energy of ball B is
[tex]KE_B=\frac{1}{2}(2)(1)^2=1 J[/tex]
So, ball A has more kinetic energy than ball B.
