When starting from rest at the bottom of a straight road with constant upward slope, Joan bicycles to the top 50.0 s ahead of Sally, whose travel time is 5.00 minutes. What is the ratio of Joan's acceleration to Sally's acceleration?
A. 0.694
B. 0.833
C. 1.20
D. 1.44
E. 6.00
Answer: D
You might also like to view...
The rate at which the temperature decreases with altitude is called the ______________
Fill in the blank(s) with correct word
Based on current evidence, how does the actual average density of matter in the universe compare to the critical density?
A) The actual average density of matter, even with dark matter included, is only about a quarter of the critical density. B) If we include dark matter, the actual average density of matter equals the critical density. C) The actual average density of matter less than 1% of the critical density. D) The actual density of average matter is about twice the critical density.
A satellite is in a circular orbit about the Earth at a distance of two Earth radii above the surface. What is the speed of the satellite? (The radius of the Earth is 6.4 × 10^6 m, and G = 6.67 × 10^?11 N × m2/kg2.)
a. 2 800 m/s b. 4 600 m/s c. 5 600 m/s d. 17 000 m/s
A bullet fired horizontally over level ground hits the ground in 0.5 second. If it had been fired with twice the speed it would have hit the ground in
A) less than 0.5 s. B) 0.5 s. C) more than 0.5 s.