A body is dropped from a height of 30m. What is the velocity of the body after it has covered a distance of 20 m? (Given g= 10 m
/s 2)
please fast
2 answers:
Answer:
approximately 19.8 m/s
If using g = 10 m/s^2, the answer rounds to 20 m/s
Explanation:
You can use the kinematic formula that relates distance covered, velocities and acceleration (without time dependence) given by:

which in our case becomes:

If using g = 10 m/s^2, the answer is 20 m/s
Answer:
the velocity is 20m/s
Explanation:
data given
- Height (h)=20m
- Gravity (g)=10m/s2
- velocity v = 0
- velocity u =?

0 = u2 - 2 (10)(20)
0 = u2 - 400
400 = u2
20m/s = u
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