1 THz = ?
A. 103 Hz
B. 106 Hz
C. 109 Hz
D. 1012 Hz
E. 1015 Hz
D. 1012 Hz
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According to the postulates of special relativity
A. the speed of light as measured by a stationary observer is the same as the speed of light measured by someone moving toward the light. B. Newton's laws do not apply for objects moving at high speeds. C. light can move faster when it moves with the luminiferous ether. D. it is impossible for an object to move faster than the medium it is moving through.
An automobile moving along a straight track changes its velocity from 40 m/s to 80 m/s in a distance of 200 m. What is the (constant) acceleration of the vehicle during this time?
a. 8.0 m/s b. 9.6 m/s c. 12 m/s d. 6.9 m/s e. 0.20 m/s
A dragster starts from rest and travels 1/4 mi in 6.70 s with constant acceleration. What is its velocity when it crosses the finish line?
A) 296 mi/h B) 269 mi/h C) 188 mi/h D) 135 mi/h
Alice and Tom dive from an overhang into the lake below. Tom simply drops straight down from the edge, but Alice takes a running start and jumps with an initial horizontal velocity of 25 m/s. Neither person experiences any significant air resistance
Just as they reach the lake below A) the speed of Alice is larger than that of Tom. B) the splashdown speed of Alice is larger than that of Tom. C) they will both have the same speed. D) the speed of Tom will always be 9.8 m/s larger than that of Alice. E) the speed of Alice will always be 25 m/s larger than that of Tom.