A Mack truck and a Volkswagen traveling at the same speed have a head-on collision. The vehicle that undergoes the greatest change in velocity will be the
A) Volkswagen.
B) Mack truck.
C) same for both.
Answer: A
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A fancy sports car moves past an observer on a corner at a speed of 0.600 c. When the observer indicates a one-second interval has passed, what time interval will be shown on the driver's watch?
a. 1.67 s b. 0.800 s c. 1.25 s d. 0.600 s e. 1.00 s
Wave Characteristics: A radio station broadcasts at a frequency of 80 MHz. How far from the transmitter will this signal travel in 67 ms? (c = 3.0 × 108 m/s)
A. 60 × 106 m B. 67 m C. 40 km D. 80 km E. 20 × 106 m
The force needed to make an object move in a circle is
a. centripetal force. b. weight. c. kinetic friction. d. static friction. e. none of the above.
Superconductivity is lost when a certain __________ is exceeded
Fill in the blank(s) with correct word