A rock is thrown straight up with an initial velocity of 30.0 m/s.What maximum height will the rock reach before starting to fall downward? (Acceleration due to gravity is 9.80 m/s2.)
a. 9.80 m
c. 20.4 m
b. 19.6 m
d. 45.9 m
D
Physics & Space Science
You might also like to view...
A sound source of 100 watts radiates sound uniformly in all directions. The intensity of the sound at a distance of 4.00 m is
A. 0.301 
B. 0.353
C. 0.497
D. 0.535
E. 0.621
Physics & Space Science
If the color spectrum ranges from red to violet, then it ranges from
A) low frequencies to high frequencies. B) long wavelengths to short wavelengths. C) both of these D) neither of these
Physics & Space Science
Which of the following is a threat to the ozone layer?
A) coal burning B) freon refrigerants C) Both of the above. D) automobile exhaust E) None of the above.
Physics & Space Science
During an isobaric process which one of the following does not change?
a. volume b. temperature c. internal energy d. pressure
Physics & Space Science