Light travels through space at a speed of 3.0 × 108 m/s. A space probe is traveling at 2.5 × 108 m/s when one of its spotlights is turned on. What speed would an observer on Earth measure for the light from the spotlight? A.
3.0 × 108 m/s

B.
5.5 × 108 m/s

C.
0.5 × 108 m/s

D.
The speed would depend on whether the probe is moving toward or away from Earth.

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

In what direction does an applied force move an object

Against his financial advisor's advice, frank has decided to invest his money in some risky stocks because he once made quite a bit of money in the stock market. his decision illustrates a. the representativeness heuristic b. overconfidence c. the availability heuristic d. confirmation bias select the best answer from the choices provided