Yes, Weightlifters are truly working out.
Explanation:
- Definition of work in physics is the transfer of energy when an object is being moved. But, when an object is being lifted then net work done is zero because of the gravitational force acting on it.
- But, if we speak in terms of transferring energy then there is a workout. For example, if you push a bench and it moves. there is a transfer of energy to the bench and it moves.
- Here, when you lift a weight, it burns your calories and also there is a movement for the weight also.
Answer:
excretion
Explanation:
The bodily process of discharging waste.
To solve this problem it is necessary to apply the concepts related to the conservation of the Momentum describing the inelastic collision of two bodies. By definition the collision between the two bodies is given as:
Where,
= Mass of each object
= Initial Velocity of Each object
= Final Velocity
Our values are given as
Replacing we have that
Therefore the the velocity of the 3220 kg car before the collision was 0.8224m/s
Answer:
Objects that fall near Earth’s surface are rarely in free fall.
"Free fall" is the situation where the ONLY force on an object is
the force of gravity, and nothing else.
Objects near Earth's surface are almost always surrounded by air.
If they are falling, then the air is exerting forces on them, and they
are not in "free fall".
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Explanation: