The answer is here. Hope I did help you.
Answer:
take angle U as reference angle
using sine rule
sin U=opposite/hypotenuse
sinU=42/42
sin U=1
sin 90=1
therefore the value of U is 90 degree
Step-by-step explanation:
The kinetic energy transfers from the moving ball to the non-moving ball.
4,5 is the answer I think
It would be 126. He would make 126 dollars.
