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Delicious77 [7]

3 years ago

6

A car with a mass of 600 kg is traveling at a velocity of 10 m/s. How much kinetic energy does it have? The car has J of kinetic

energy.

1 answer:

konstantin123 [22]3 years ago

5 0

The kinetic energy of an object is given by:
$K= \frac{1}{2}mv^2$
where m is the mass of the object and v its velocity.

The car in this problem has a mass of m=600 kg and a velocity of v=10 m/s, therefore if we put these numbers into the equation, we find the kinetic energy of the car:
$K= \frac{1}{2}mv^2= \frac{1}{2}(600 kg)(10 m/s)^2=30000 J$

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A force of 350 N causes a body to move with an acceleration of 10 m/s2. What’s the mass of the body?

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Help me with the question b.

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a) The specific heat capacity means the amount of heat needed by a unit mass of a material to increase its temperature in one unit.

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a) The specific heat capacity means the amount of heat needed by a unit mass of a material to increase its temperature in one unit.

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$c$ - Specific heat capacity, in joules per kilogram-degree Celsius.

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$T_{f}$ - Freezing point, in degrees Celsius.

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$Q = 7800\,J$

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