A baseball is hit at ground level. The ball is observed to reach its maximum height above ground level 3.0 s after being hit. And 2.5 s after reaching this maximum height, the ball is observed to barely clear a fence that is 97.5 m from where it was hit. How high is the fence?
a. 8.2 m
b. 15.8 m
c. 13.5 m
d. 11.0 m
e. 4.9 m
C
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The following figures show a top view of Earth, sunlight, and six different positions of the Moon as it orbits Earth. Note that the distances shown are not drawn to scale. Rank each of the six lunar positions from left to right based on the amount of the Moon’s illuminated surface that is visible from Earth, from greatest to least. (If two diagrams have an equal amount of illumination as seen from Earth, put one on top of the other.)
A 0.50-kg mass attached to the end of a string swings in a vertical circle (radius = 2.0 m). When the mass is at the lowest point on the circle, the speed of the mass is 12 m/s. What is the magnitude of the force of the string on the mass at this position?
a. 31 N b. 36 N c. 41 N d. 46 N e. 23 N
The centroid of the L-shaped segment shown in the figure below is at coordinates (x, y) (in.):
(A) 2.0, 1.75
(B) 3.0, 1.50
(C) 2.0, 1.50
(D) 2.5, 1.25
The Moon's huge Mare Orientale basin has a twin on Mercury named:
A) Galileo. B) Caloris. C) Mare Marineris. D) the weird terrain. E) Valhalla.