a) PE=mgh=0.2*9.8*1.2=2.352 J
b) KE=PE=2.352 J
c)
m/s
Explanation:
It is given that, the height of a certain tower is 862 feet i.e to reach on the ground the object should travel, s = 862 feet
The distance traveled by a freely falling object is given by :



t = 7.34 seconds
So, the object will take 7.34 seconds to fall to the ground from the top of the building. Hence, this is the required solution.
The force of gravity on earth is 9.807 m/s^2 (or meters per second per second).
To determine the force applied, multiply the mass of the package (5.7 kg) by the force of gravity on Earth (9.807 m/s^2).
5.7 x 9.807 = 55.86 N The answer is D.
Note: the actual force is 55.89 Newtons.
If a proton were added to the nucleus of an atom . . .
-- It would become a different atom (an atom of a different element)
.
-- It would add 1 to the atomic mass.
-- Its charge would increase by +1
.
Answer:
1. Equal and opposite reaction
2. Pairs
3. That is equal
Explanation:
I have tried my best but without knowing your curriculum or the possible answers it is difficult to know exactly what the answer would be... :(
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- Hope this helped!