A small rocket to gather weather data is launched straight up. Several seconds into the flight, its velocity is 140 m/s and it i
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<h3><u>Answer</u> :</h3>
Initial velocity = zero (i.e., free fall)
Final velocity = 30m/s
Acceleration due to gravity = 10m/s²
For a body falling freely under the action of gravity, g is taken positive
◈ <u>First equation of kinenatics</u> :
⇒ v = u + gt
⇒ 30 = 0 + 10t
⇒ t = 30/10
⇒ <u>t = 3s</u>
Hence, object will attain a speed of 30m/s after 3s.
Using the Definition of Work, we have:
If you notice any mistake in my english, please let me know, because i am not native.
If you notice any mistake in my english, please let me know, because i am not native.