14. Determine the kinetic energy of a 1000-kg roller coaster car that is moving with a speed of 40.0 m/s.

Explanation:

The kinetic energy of an object can be found by using the formula

m is the mass

v is the velocity

From the question we have

We have the final answer as

Hope this helps you

Hello!!

Sorry to contradict the before answer, but he's wrong.

The formula is correct:

k = 1/2 * mv²

If we replace it with our data:

k = 1/2 * (1000 kg) (40 m/s)²

Here is the problem, 40^2 is = 1600, so the result is wrong:

k = 500 Kg * 1600 m²/s²

And if we resolve it:

k = 800 000 Joules

Then the kinetic energy of the roller coaster car is 800 000 Joules.

are there options? cause you ain’t. real specific