The child on a swing can be modeled as a simple pendulum. The period of a simple pendulum is given by
Our suns is considered average because it's temperature and absolute magnitude places it in the middle of the_ range of the H-R
1 answer:
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Explanation:
Here,
initial velocity(u)=25m/s
final velocity (v)=0m/s
time taken(t)= 5 second
Now,
Answer: Option (c) is the correct answer.
Explanation:
When the child is tossed up into the air then she gains kinetic energy as the child has moved from its initial position.
It is given that mass is 20 kg, velocity is , and height is 2 m.
Calculate the kinetic energy of child as follows.
kinetic energy =
=
=
=
Also, when child falls off the ground then she will have gravitational potential energy.
Calculate gravitational potential energy of child as follows.
Potential energy = m × g × h
=
=