In the equation for the gravitational force between two objects, which quantity must be squared?
1 answer:
Answer:
d
Explanation:
The quantity that must be squared in the equation of gravitational force is distance d.
According to the universal gravitational law, the square of the distance between two objects is inversely proportional to the force of gravity.
- Therefore, the quantity to be squared is d
The formula is given as:
Fg =
So d is the quantity that must be squared
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Explanation:
Given that,
Mass of the block, m = 12.2 kg
Initial velocity of the block, u = 6.65 m/s
The coefficient of kinetic friction,
(a)The force of kinetic friction is given by :
mg is the normal force
So,
(b) Net force acting on the block in the horizontal direction,
f = ma
a is the acceleration of the block
(c) Let d is the distance covered by the block before coming to the rest. Using third equation of motion as follows :
Hence, this is the required solution.
Answer:
Explanation:
since the ball was thrown at 0s and caought again at 5 s. applying eqaution of motion.
0 = u×5 - ×10×5×5
solving the eqaution we gaet initial velocity u = 25 m/s.
there fore total energy E = ×m×25×25 J
where m is the mass of the ball according to conservation of energy E remains constant
conservation of energy:
kinetic + potential energy of the ball = E
kinetic energy = E - mgh 1
h =
applying ot in the eqaytion 1
kinetic energy = e - 2
Therefore kinetic energy vs height will be a straight line with negative slope and kinetic energy vs time will be parabola that is open upward.
