In the experiment, you determine that the exit velocity has a downward vertical component 1 m...
In the experiment, you determine that the exit velocity has a downward vertical component 1 m /s and the ball leaves the end of the track at height 3.12 m above floor. How much time does it take the ball to hit the floor?
Homework Answers
Assuming downward velocity as negative
= yi + vyt + 1/2gt2
0 = 3.12 - 1t - 4.9t2
4.9t2 + 1t - 3.12 = 0
t = - 1 +/- 7.88 / 2 * 4.9
t = - 1 + /- 7.88 / 9.8
ignore the negative value
t = - 1 + 7.88 / 9.8
t = 0.7024 sec
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