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A rock thrown up into the air with an initial speed of 25 m/s . How much time will pass before the rock is moving back down at 6 m/s ?
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Jan 18, 2021
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A rock thrown up into the air with an initial speed of 25 m/s . How much time will pass before the rock is moving back down at 6 m/s ?
Physics
high-school
Remon
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Remon
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To reach the highest point it will take time t
v= u + at
0 = 25 -9.8t
time t = 25/9.8 = 2.55 seconds
On the way down
v = u + at
6 = 9.8 t
time t= 6/9.8 = 0.61 seconds
Total time = 2.55 + 0.61 = 3.16 seconds
Pratik Mandrekar
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Jan 23, 2021
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Pratik Mandrekar
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