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notka56 [123]
4 years ago
10

A student throws a heavy red ball horizontally from a balcony of a tall building with an initial speed v0. At the same time, a s

econd student drops a lighter blue ball from the same balcony. Neglecting air resistance, which statement is true? The blue ball reaches the ground first. The balls reach the ground at the same instant. The red ball reaches the ground first. Both balls hit the ground with the same speed. None of the above statements is true. Incorrect: Your answer is incorrect.
Physics
1 answer:
liraira [26]4 years ago
6 0

Without air resistance, both balls reach the ground at the same instant.

Neither horizontal motion nor weight affects vertical motion.

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Which as more weight a kilogram of bricks in air or a kilogram of feathers in water? Explain your answer.
ale4655 [162]
A kilogram is a unit of weight. So a kilogram of bricks would weigh the same as a kilogram of feathers despite if its in water or air since weight is determined by gravity in relation to mass and not what substance the object is in.
3 0
4 years ago
What are the units of density
Bad White [126]

Answer:

SI unit of density - Kilogram per cubic metre (Kg/m³)

CGS unit of density - gram per cubic centimetre (g/cm³)

5 0
3 years ago
If you do 40 j of work in 4s, how much power did you generate?
brilliants [131]

Explanation:

<em><u>GIVEN </u></em><em><u>:</u></em>

Work done(W) = 40 J

Time(t) = 4 s

Power (P) = ?

<em><u>We </u></em><em><u>know </u></em><em><u>that:</u></em>

W = P×t

Therefore,

P= W/t

=40/4

= 10 W

<em><u>Hope </u></em><em><u>it </u></em><em><u>helps</u></em>

4 0
2 years ago
Suppose Earth's mass increased but Earth's diame-
navik [9.2K]

Answer: It would increase.

Explanation:

The equation for determining the force of the gravitational pull between any two objects is:

F = G \frac{m1m2}{r^2}

Where G is the universal gravitational constant, m1 is the mass of one body, m2 is the mass of the other body, and r^2 is the distance between the two objects' centers squared.

Assuming the Earth's mass but not its diameter increased, in the equation above m1 (the term usually indicative of the object of larger mass) would increase, while the r^2 would not.

Thus, it goes without saying that, with some simple reasoning about fractions, an increasing numerator over a constant denominator would result in a larger number to multiply by G, thus also meaning a larger gravitational strength between Earth and whatever other object is of interest.

7 0
4 years ago
Kinetic energy is the energy of motion and increases with the speed of the wave.
hammer [34]
Kinetic energy is movement so A
Potential is still so false
5 0
3 years ago
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