A lamp is 50 ft. above the ground. A ball is dropped from the same height from a point 30 ft. away from the light pole. If ball falls a distance \[s=16{{t}^{2}}\] ft. in t seconds, then the speed of the shadow of the ball moving along the ground 1/2s later is

A lamp is 50 ft. above the ground. A ball is dropped from the same hei

1.	A lamp is 50 ft. above the ground. A ball is dropped from the same height from a point 30 ft. away from the light pole. If ball falls a distance \[s=16{{t}^{2}}\] ft. in t seconds, then the speed of the shadow of the ball moving along the ground 1/2s later is
A.	-1500 ft/s
B.	1500 ft/s
C.	-1600 ft/s
D.	1600 ft/s
Answer» B. 1500 ft/s

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A lamp is 50 ft. above the ground. A ball is dropped from the same height from a point 30 ft. away from the light pole. If ball falls a distance \[s=16{{t}^{2}}\] ft. in t seconds, then the speed of the shadow of the ball moving along the ground 1/2s later is

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