I think it’s 720 J but I’m not sure. Could someone tell me if I’m right?
pls
a person on a bike (m=90 kg) is travelling 4 m/s at the top of a 2 m hill. what is the bikers total energy?
A) 720 J
B) 1994 J
C) 2484 J
D) 1764 J
3 answers
kinetic energy ... 1/2 m v^2 = 1/2 * 90 * 4^2
gravitational potential energy ... m g h = 90 * 9.8 * 2
add the two energies
gravitational potential energy ... m g h = 90 * 9.8 * 2
add the two energies
Thank you!