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katen-ka-za [31]
3 years ago
11

a rock is dropped from a height of 60 m and is in free fall. What is the velocity of the rock as it reaches the ground 3.5 secon

ds later?
Biology
1 answer:
oksian1 [2.3K]3 years ago
7 0

Data given

                 Initial Velocity = 0 m/s  

                 Change in distance x = 60m  

                 Change in time = 3.5s

                Acceleration due to gravity = -9.81 m/s^2  

Required

               Final Velocity (vf) = ?  

Solution

             According to first equation of motion

             Vf = Vi+gt  

             Put the values, we will get

              Vf = 0 + (-9.81) (3.5)  

             -34.3 m/s (Answer)


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