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*An small toy water rocket has mass 2 kg and is moving upwards with 100 J of kinetic energy, calculate the speed of the rocket
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Answers ( )
Answer:
speed= 0.32m/s
Explanation:
given
mass=2kg
kinetic energy=100J
speed=?
from
KE=½mv²
v²=2kE/m
=√(2×100)/2000
=√(200/2000)
=√(1/10)
=√0.1
v =0.32m/s