KE = 1/2 mv^2, solve for m
Once you've found m use the other two v's, same eq.
A boulder flies through the air at 14.5 m/s with kinetic energy 310 J.
What's its mass?
What's the boulder's kinetic energy if its speed doubles?
What's the boulder's kinetic energy if its speed is halved?
2 answers
thank you
2.95 kg
1240 J
77.5 J
2.95 kg
1240 J
77.5 J