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ankit arya
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kinematics ... rock thrown up in air
If a rock is thrown upward on the planet Mars with a velocity of 22 m/s, its height (in meters) after t seconds is given by H = 22t - 1.86t^2.
Find the velocity of the rock when t = a.
When will the rock hit the surface?
With what velocity will the rock hit the surface?
v=u+at
i found the ans for first two ques but i am not able to solve the third one.
velocity at t=a is 22-3.72a
rock will hit the surface at t=11.83s
pls help me with the third one...
Homework Statement
If a rock is thrown upward on the planet Mars with a velocity of 22 m/s, its height (in meters) after t seconds is given by H = 22t - 1.86t^2.
Find the velocity of the rock when t = a.
When will the rock hit the surface?
With what velocity will the rock hit the surface?
Homework Equations
v=u+at
The Attempt at a Solution
i found the ans for first two ques but i am not able to solve the third one.
velocity at t=a is 22-3.72a
rock will hit the surface at t=11.83s
pls help me with the third one...