A ball is dropped from a rooftop of a building and falls for two seconds. The acceleration of gravity is 9.8 m/s2 . The ball is referred to at the two second time. The distance the ball is below the rooftop in meters is
a. 0 d. 6
b. 4.9 e. none of these
c. 9.8
D
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A 2000 kg car is traveling on a banked curved icy road. The velocity of the car is 25.0 m/s and the road has a radius of curvature of 500 m. If the car is to travel on the icy road without sliding, then the angle of the banked road is
A. 25.7 degrees. B. 21.0 degrees. C. 12.7 degrees. D. 10.5 degrees. E. 7.27 degrees.
A student weighing 700 N climbs a flight of stairs 5.0 m high. Calculate the work done
Because of refraction a fish in the water appears
A) nearer the surface. B) deeper in the water. C) at its actual depth.
Why do prominences appear pink during a solar eclipse?
a. Because of the high temperature of the gases b. Because the photosphere being blocked out c. Because of the placement of the lunar disk over the Sun d. Because the prominences interact with Earth's magnetic field e. Because different gases are being combined in the chromosphere