An athlete participates in an interplanetary discus throw competition during an Olympiad that takes place on a planet where the free-fall acceleration is 9.7 m/s2
He throws the discus with an initial velocity of 20 m/s at an angle of 60° from the vertical. Neglecting air resistance and the height of the discus at the point of release, what is the range of the discus? A) 21 m
B) 60 m
C) 36 m
D) 40 m
E) 32 m
C
You might also like to view...
The greatest inaccuracy in Copernicus's model of the solar system was that the planets
a. traveled in circular orbits with uniform motion. b. traveled on epicycles whose centers followed orbits around the Sun. c. traveled in elliptical orbits. d. were allowed to travel backwards in their orbits. e. orbited the Sun.
What is the ionization energy of the neutral hydrogen atom?
A) 27.2 eV B) 13.6 eV C) 6.8 eV D) none of the given answers
A current-carrying ohmic metal wire has a cross-sectional area that gradually becomes smaller from one end of the wire to the other. The current has the same value for each section of the wire, so charge does not accumulate at any one point. How does the drift speed vary along the wire as the area becomes smaller?
1.It increases. 2.It decreases. 3.It remains constant.
Warm air rises and cool air sinks. So, when an air parcel rises it becomes
A) cooler. B) warmer. C) more stable. D) less stable.