A hockey puck slides off the edge of a table with an initial velocity of 28.0 m/s. The height of the table above the ground is 2.00 m. What is the angle below the horizontal of the velocity of the puck just before it hits the ground?
A) 77.2°
B) 72.6°
C) 12.8°
D) 12.6°
E) 31.8°
D
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The rings of Uranus were discovered during ______
a. an occultation of a star by the rings (as well as by the planet) b. during an eclipse of one of the moons by the rings. c. a voyage to Uranus by astronauts d. as Uranus and the rings passed behind Jupiter. e. an encounter by the Voyager 1 space probe.
Website visitors spend an estimated 20-30 minutes on a webpage deciding whether the content meets their needs.
Answer the following statement true (T) or false (F)
What kinds of objects lie in the halo of our galaxy?
A) open clusters B) O and B stars C) globular clusters D) gas and dust E) all of the above
A baseball thrown from the outfield is released from shoulder height at an initial velocity of 28.3 m/s at an initial angle of 30.0° with respect to the horizontal. If it is in its trajectory for a total of 4.00 s before being caught by the third baseman at an equal shoulder-height level, what is the ball's net vertical displacement during its 4.00-s trajectory?
a. 98.0 m b. 9.80 m c. 10.2 m d. zero e. 20.4 m