2. Use the law of conservation of energy (assume no friction) to fill in the blanks at the various marked positions for a 1000-kg roller coaster car.
KE=0 J
PE=450 000J
B
KE=LC
m/s
PE=200 000 J
he
m
m/s
F
Accel'n
T m/s2
KE=_
PE=
G
J
h=0 m
ya
H
m/s
45°