Assume that the roller coaster with a mass of 1000 kg begins at the star with an
initial velocity of 0 m/s.
a. Calculate the PE of the car at the start.
b. As the car moves down the hill, what happens to the PE? _____ What
happens to the KE? _____
c.
What happens to the total sum of the KE + PE? _______
d. Calculate the PE remaining at point B? _____
300 m
e. Calculate the KE at point B? _______
f.
100 m
50 m
25 m
What is the velocity of the car at point B?
g. Calculate the PE remaining at point C? _____
h. Calculate the KE at point C? _______
i.
What is the velocity of the car at point C?
j.
Calculate the PE remaining at point D? _____
k. Calculate the KE at point D? _______
l.
What is the velocity of the car at point D?
The basketball has a mass of 0.625 kg
As a ball bounces, it loses energy to _________ and ___________. This loss of energy
causes the ball to reach a ____________ height on each bounce.
a.
Calculate the PE of the ball right before it starts its first bounce: __________
b.
How much KE does the ball have right before it hits the floor? _______
c.
What is the velocity of the ball right before hitting the floor? _______________
d.
What is the PE of the ball at the height of its 2nd bounce? _________
e.
How much energy was lost due to heat and sound? __________
f.
How much KE does the ball have right before it hits the floor after the 2nd bounce? _______
g.
What is the velocity of the ball right before hitting the floor? _______________
h.
What is the PE of the ball at the height of its 3rd bounce? _________
i.
How much energy was lost due to heat and sound? __________
j.
How much KE does it have right before hitting the floor? ___________
k.
What is the velocity of the ball right before hitting the floor? __________
PE = _________J
KE = _________J
ETOTAL = _________J