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If you throw a ball vertically
up and catch it on the way back, there is a simple way
to find the speed at which you throw the ball. Your
answer will be pretty close (approximate) to the true
speed, in feet per second.
Start by counting how many
seconds the ball is in the air. If you say "One
thousand and ONE, one thousand and TWO, one thousand
and THREE," and so on, that's a pretty good (approximate)
measure of the seconds.
If your total flight time
for the toss was 3 seconds, you multiply 3 times 16
and get 48. So the approximate speed at which you threw
the ball was 48 feet per second. (That is nearly 33
miles per hour!) What a toss! Just remember the formula:
speed in feet per second = number of seconds times 16.
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