If a roller coaster cart needs more Kinetic Energy to reach the top of the track, what are two ways to increase the amount of Ki
1 answer:
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Answer:
Angular velocity,
Explanation:
The mass of the skater, M = 74.0 kg
Mass of each arm, ( since it is 13% of the whole body and each arm is considered)
Mass of the trunk,
Total moment of Inertia = (Moment of inertia of the arms) + (Moment of inertia of the trunks)
The final moment of inertia of the person:
According to the principle of conservation of angular momentum:
The distance covered is 54.0 m
Explanation:
Since the motion of the car is a uniformly accelerated motion, we can use the following suvat equation:
where
u is the initial velocity
t is the time
a is the acceleration
s is the distance covered
For the car in this problem, we have
u = 0 (it starts from rest)
is the acceleration
t = 3.9 s is the time
Substituting, we find s:
Learn more about accelerated motion:
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