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Amiraneli [1.4K]
3 years ago
12

2 rocks of the same mass are rolling down a hill at different speeds (one faster than the other). which rick would have more kin

etic energy??
Physics
2 answers:
stepan [7]3 years ago
5 0

Kinetic energy of an object depends on its mass and its speed.

If the masses are equal, then the rick with <em>more speed</em> has more kinetic energy.

Sedbober [7]3 years ago
4 0

The rock which is faster than the other have more kinetic energy.

<u>Explanation:</u>

Two rocks are of same mass are rolled down the hill at different speeds. Before the rocks are rolled, at rest they both will have same potential energy and zero kinetic energy. When the rocks are rolled, their potential energy reduces as they move forward and their kinetic energy increases from zero.

Since they are travelling at different speeds, one will be faster than the other, and so one rock reached faster than the other. The rock which reaches the ground first will have more kinetic energy than the other.

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NEED THIS ASAP
horrorfan [7]

Answer:

Energy is essentially work done by an object or on object.

From,

W = Fd

It's directly proportional to mass.

from,

K. E = 1/2mv²

Energy is directly proportional to mass.

P. E = mgh

Energy is directly proportional to mass.

H = mc∆T

Energy is directly proportional to mass.

Thus increasing mass will increase the energy also imparted on another object since all the above eqns show that relationship.

And for 2 moving bodies

K.Ei = K.Ef(energy conservation)

m1u²1 + m2u²2 = m1v²1 + m2v²2

The relationship is the same that the greater mass the greater the impact.

5 0
2 years ago
If a pebble is being transported in a stream by rolling, how does the velocity of it compare to the velocity of the stream?
AleksandrR [38]
Streams carry sediment, like pebbles, in their flows. The pebbles can be in a variety of locations in the flow, depending on it's size, the balance between the upwards velocity on the pebble (drag and lift forces), and it's settling velocity.
3 0
3 years ago
The inventor of the electric cell was:<br> O Coulomb<br> Franklin<br> o Gilbert<br> O Volta
Tomtit [17]

Answer:

The inventor of the electric cell was:

Alessandro Volta (in other words, Volta)

Explanation:

3 0
3 years ago
Read 2 more answers
Please help At which point is the potential energy the greatest ?​
4vir4ik [10]

Answer: 3

Explanation:

5 0
2 years ago
An echo is heard from a cliff 3.71 s after a rifle is fired. How many feet away is the cliff
LenKa [72]

The cliff is 2042 ft away.

We know that the speed of sound in air is directly proportional to the absolute temperature.

First convert the Fahrenheit temperature to Celsius;

 °C = 5/9(44.5 - 32)

°C = 6.9 °C

Applying the formula;

V1/V2 = √T1/T2

Where; V1 = velocity of sound in air at  0°C

V2 = Velocity of sound in air at 6.9 °C

1087/V2 = √273/279.9

V2= 1101 ft/s

Given that; V = 2s/t

Where s is the distance of the cliff

t is the time taken

1101 ft/s = 2s/3.71 s

s = 1101 ft/s × 3.71 s/2

s = 2042 ft

Learn more:brainly.com/question/15381147

3 0
2 years ago
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