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postnew [5]
3 years ago
9

Two stones, one of mass m and the other of mass 2m, are thrown directly upward with the same velocity at the same time from grou

nd level and feel no air resistance. Which statement about these stones is true?
a. The heavier stone will go twice as high as the lighter one because it initially had twice as much kinetic energy.
b. Both stones will reach the same height because they initially had the same amount of kinetic energy.
c. At their highest point, both stones will have the same gravitational potential energy because they reach the same height.
d. At Its highest point, the heavier stone will have twice as much gravitational potential energy as the lighter one because it is twice as heavy.
e. The lighter stone will reach its maximum height sooner than the heavier one.
Physics
1 answer:
brilliants [131]3 years ago
8 0

Answer:

c.  At their highest point, both stones will have the same gravitational potential energy because they reach the same height.

Explanation:

The above statement is true going by the fact that, the gravitational potential energy of both stones is a function of its mass (weight) as well as the height at which it reach. <em>Despite the fact that, both stones has different weights, it would reach different heights. At their various maximum height, the will have same potential energy.</em>

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What is the mass of 3 m3 of a substance having density 1200 kg/m3​
adell [148]

Answer:

3600 kg

Explanation:

From the question,

Density = Mass/Volume

D = M/V.............................. Equation 1

Where D = Density of the substance, M = mass of the substance, V = Volume of the subtance.

Make M the subject of the equation

M = D×V ............................ Equation 2

Given: D = 1200 kg/m³, V = 3 m³.

Substitute these values into equation 2

M = 1200×3

M = 3600 kg.

Hence the mass of the substance is 3600 kg

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24- Which of the fallowing devices make use a lens
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d.

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Answer:

Why sex cells only need half the number of chromosomes compared to other cells in the body?  As gametes are produced, the number of chromosomes must be reduced by half. Why? The zygote must contain genetic information from the mother and from the father, so the gametes must contain half of the chromosomes found in normal body cells.

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If a weight hanging on a string of length 5 feet swings through 5^\circ on either side of the vertical, how long is the arc thro
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What mass of water must evaporate from the skin of a 70.0 kg man to cool his body 1.00 ∘C? The heat of vaporization of water at
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Answer:

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Explanation:

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