A golf ball rolls off a horizontal cliff with an initial speed of 14.4 m/s. The
ID: 2127399 • Letter: A
Question
A golf ball rolls off a horizontal cliff with an initial speed of 14.4 m/s. The ball falls a vertical distance of 12.0 m into a lake below.style="font-family: verdana, helvetica, sans-serif; font-size: 13px; line-height: 20px;">color="red">style="font-family: verdana, helvetica, sans-serif; font-size: 13px; line-height: 20px;">color="red">style="font-family: verdana, helvetica, sans-serif; font-size: 13px; line-height: 20px;">
A golf ball rolls off a horizontal cliff with an initial speed of 14.4 m/s. The ball falls a vertical distance of 12.0 m into a lake below. How much time does the ball spend in the air?Explanation / Answer
a) t = sqrt(2*H/g) = sqrt(2*12/9.8) = 1.565 s
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