A car is traveling north at 20.0 m/s at time t = 0.00 s. The same car is traveling north at 24.0 m/s at time t = 8.00 s. What statement is necessarily true about the acceleration of the car?
A)
The car undergoes constant acceleration of 0.500 m/s2 during the time from t = 0.00 s to t = 8.0 s.
B)
The car undergoes constant acceleration of 4.00 m/s2 during the time from t = 0.00 s to t = 8.0 s
C)
The car has zero acceleration during the time from t = 0.00 s to t = 8.0 s
D)
The average acceleration of the car is 0.500 m/s2 during the time from t = 0.00 s to t = 8.0 s
E)
The average acceleration of the car is 4.00 m/s2 during the time from t = 0.00 s to t = 8.0 s
D
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A long, straight, horizontal wire carries current toward the east. A proton moves toward the east alongside and just south of the wire. What is the direction of the magnetic force on the proton?
A) toward the north B) toward the south C) upward D) downward E) toward the east.
The break-up of Pangaea had worldwide consequences with the exception of
A) the lowering of sea level. B) a rise in sea level. C) the divergence and evolution of new species. D) climate change.
Radio waves are reflected by layers in the ______________
Fill in the blank(s) with correct word