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:
The anwser is C it can also be A but C would make the most sense
Because we have sweat glands in our skin and the reason is to decrease the body temperature
Answer:
Height will be equal to 0.4489 m
Explanation:
We have given mass of the toy m = 0.50 kg
Initial kinetic energy K = 2.2 J
We have to fond the height of the hill over which car roast
When car will roast the hill its kinetic energy will be converted into potential energy and at maximum height all kinetic energy will be converted into potential energy
So at maximum height 
Acceleration due to gravity 
So 0.50×9.8×h = 2.2
h = 0.4489 m
Answer:
D) The rubber object will become negatively charged, and the glass object will become positively charged.
Explanation:
Electron affinity of rubber or glass will decide the thing that rubber will get the negative charge or the glass will get the negative charge
As we know that if the electron affinity of a given material is high then that material will not lose its electron while rubbing with some other material.
When we compare rubber and glass then we know that electron affinity of rubber is more as compare to glass.
So rubber will get negative charge when we rub it with glass
so correct answer will be
D) The rubber object will become negatively charged, and the glass object will become positively charged.
