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2 years ago

2 rocks of different masses roll down a hill at the same speed which rock has more kinetic energy small one or big one ???

Physics

2 answers:

gregori [183]2 years ago

7 0

The big rock will be exhibiting more kinetic energy.

Explanation:

The kinetic energy is calculated for an object with the formula of ½ mv2. Here m is the mass of the object and v is the velocity or speed of the object.

As it is known that the speed of two rocks with different masses are same so the kinetic energy will be completely depending on the mass of the object.

So the rock with higher mass will be having more kinetic energy compared to the smaller rock as its mass will be less.

So the bigger stone will be exhibiting more kinetic energy than the small one.

Sophie [7]2 years ago

5 0

Kinetic energy depends on the mass and the speed of a moving object.

If the speeds are equal, then the rick with more mass has more kinetic energy.

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Read 2 more answers

Two samples of water are mixed together.

horrorfan [7]

Let the cold water go up x degrees.

Let the hot water go down 100 - x degrees.

The formula for heat exchange is m*c*delta t

Givens

Ice

deltat = x

m = 0.50 kg

c = 4.18

Hot water

deltat = 100 - x

m = 1.5 kg

c = 4.18

Formula

The heat up = heat down

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Solution

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2 years ago

A child walks due east on the deck of a ship at 2 miles per hour. the ship is moving north at a speed of 18 miles per hour. find

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Refer to the figure shown below.

The velocity of the child and the velocity of the ship should be added vectorially to find the speed and direction of the child relative to the water surface.

The magnitude of the child's velocity is
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The direction of the child's speed is
θ = tan⁻¹ (18/2) = tan⁻¹ 9 = 83.7° north of east or counterclockwise from the eastern direction.

Answer:
The magnitude is 18.1 mph.
The direction is 84° north of east.

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