Author Question: In these figures, we see a boy named Billy riding a carnival ride called the Rotor and the free-body ... (Read 75 times)

kodithompson · **on:** Jul 28, 2018

In these figures, we see a boy named Billy riding a carnival ride called the Rotor and the free-body diagram for the forces acting on him. What must be the magnitudes of the vectors fwall,Billy and WEarth,Billy if Billy remains at the same height along the wall?
a. fwall,Billy is greater than WEarth, Billy to keep Billy from falling.
b. The magnitudes of fwall,Billy and WEarth, Billy are equal.
c. fwall,Billy depends on the magnitude of Nwall,Billy, but the magnitude of WEarth,Billy is always the same.
d. Nwall,Billy and fwall,Billy must be equal in magnitude.

Question 2

Why is acceleration a vector?
a. Because it can only describe a slowing down or speeding up.
b. Because it is a measurement of change.
c. Because acceleration is the rate of change of velocity, which is itself a vector.
d. Because it is measured in (meters per second) per second.
e. Because it relates to speed.