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katrin2010 [14]
3 years ago
13

What happens to kinetic energy of a snowball as it rolls across the lawn and gains mass

Physics
2 answers:
leva [86]3 years ago
7 0
If you are not considering friction, the energy must be the same, therefore, kinetic energy will be constant.
Naya [18.7K]3 years ago
3 0

If an object whose mass is growing keeps the same, unchanged
kinetic energy, then its motion must slow down, because

        Kinetic Energy = (1/2) (mass) (speed)² .
  
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A materials density is the same , no matter how large or small the sample is or what it’s shape is as long as it is solid unifor
Scorpion4ik [409]

Answer:

See the explanation below

Explanation:

Density is defined as the relationship between mass and volume, i.e. the following equation can be used:

density = m/v

where:

density [kg/m^3]

m = mass [kg]

v = volume [m^3]

If we change the volume of a body by reducing its size, its mass will also decrease proportionally with a density as seen in the equation.

m = density*v

To understand this concept more clearly, let's use the following example:

We know that the density of water is equal to 1000 [kg/m^3], that is, 1 cubic meter of water contains 1000 kilograms of water, using the equation.

1000 = m /1

m = 1000*1 = 1000 [kg]

Now if we have 500 kilograms of water, that would pass with the volume so that the density remains constant.

1000 = 500/v

v = 500/1000

v = 0.5 [m^3]

We can see that the volume of water has halved. Since the mass of water was reduced by half. That is, the relationship between mass and volume is proportional to the density of the material or substance.

8 0
3 years ago
If the IMA of a machine is 2 and the effort force is 50 newtons, then the force applied to the resistance is _____. 48 N 50 N 25
zysi [14]

IMA stands for ideal mechanical advantage, which is the theoretical force amplification factor on an ideal mechanical device free of friction, deformations, etc.


If the applied force (effort) is 50N, then the force applied to the resistance is multiplied by the IMA=2 to get 100N.

7 0
3 years ago
Read 2 more answers
Motion maps for two objects, Y & Z, are shown.
serg [7]

Answer: it’s 3 seconds

Explanation:

5 0
2 years ago
Equilibrium can occur only if
sergeinik [125]

Answer:

Equilibrium is when the rate of the forward reaction equals the rate of the reverse reaction. All reactant and product concentrations are constant at equilibrium.

Explanation:

4 0
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This diagram shows how a certain type of precipitation is formed. Water drops are caught in up-drafts and down-drafts, over and
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It would be B. Hail.

5 0
3 years ago
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