How long does it take for an object thrown straight upward on the surface of the...
How long does it take for an object thrown straight upward on the surface of the moon with an initial velocity of 20 m/s, to reach the peak of its path? (acceleration of gravity on the moon is 2 m/s2)
| a. |
5 s |
|
| b. |
10 s |
|
| c. |
20 s |
|
| d. |
40 s |
|
| e. |
None of these |
Homework Answers
using the equation of linear motion we have
v = u + gt
at maximum height v =0
0 = 20 + (-2)*t
t = 20/2 = 10s
so option b) 10 s is the correct answer
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