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You are running around a track at 5 km/h and then you increase your speed to 10 km/h. By what factor did you increase your kinetic energy?

User Boocko
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1 Answer

1 vote

Answer:

You increase your kinetic energy by a factor of 4.

Step-by-step explanation:

The kinetic energy of an object is given by the formula:

K = 0.5 x m x v^2

where K is the kinetic energy, m is the mass of the object, and v is the velocity.

Assuming that your mass remains constant, we can simplify the equation to:

K = 0.5 x v^2

When you increase your speed from 5 km/h to 10 km/h, your velocity doubles.

So, the factor by which your kinetic energy increases is:

(0.5 x (10 km/h)^2) / (0.5 x (5 km/h)^2)

= (0.5 x 100 km^2/h^2) / (0.5 x 25 km^2/h^2)

= 4

Therefore, you increase your kinetic energy by a factor of 4 when you increase your speed from 5 km/h to 10 km/h.

User Matthew Drury
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