A car traveling 85 km h slows down at a constant 0.50 m/s2 just by “letting up on the gas.” Calculate
(a) the distance the car coasts before it stops,
(b) the time it takes to stop,
(c) the distance it travels during the first and fifth seconds.
Answer: 
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The escape velocity at the event horizon around a black hole is
a. smaller than the speed of light. b. equal to the speed of light. c. much larger than the speed of light. d. irrelevant since nothing (including light) can escape from a black hole.
A(n) ____________________ periodically emits large amounts of X-ray radiation as material accretes around a neutron star or black hole
Fill in the blank(s) with correct word
An observer will measure the wavelength of waves emanating from a source that is moving away as longer than it really is
Indicate whether the statement is true or false
An object requires a force of 30 N to hold it under water. The object weighs 90 N in air. Its density is nearest:
