What is the kinetic energy of ball B just after the collision? Ball (A), of mass 0.300 kg, initially moving at 5.00 m/s strikes a stationary ball (B) of the same mass initially at the origin. Just after the collision, ball A moves at 4.33 m/s, at an angle of 30.0° with respect to the original line of motion, and ball B moves along a line that makes an angle of 60.00° with respect to the original line of motion of A (See Figure).
before collision
after collision
5.00 m/s
4.33 m/s
30°
60°
Select one:
a. 1.88 J
b. 0.372 J
c. 0.937 J
d. 2.81 J