The same object in different inertial reference systems:
a. will always have the same kinetic energy, regardless of the reference system.
b. can have different amounts of kinetic energy viewed from each inertial reference system.
c. cannot be studied from two different reference systems.
d. can have different amounts of gravitational potential energy in different reference systems, but will always have the same amount of kinetic energy.
e. sometimes conserves energy and sometimes does not, depending on inertial reference system.
Question 2
If a boat is moving north at 15 kilometers per hour and a dog on that boat is running south at 8 kilometers per hour, what is the dog's velocity measured from the shore?
a. 7 kilometers north per hour.
b. 23 kilometers north per hour.
c. 15 kilometers north per hour.
d. 150 mph east-south-east.
e. 7 kilometers south per hour.
Kinetic Sand
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