Answer:
a
Explanation:
heat is energy, energy cannot be made or destroyed but transferred
No, we cannot touch gravity nor can we physically see it. We can only see how it works.
The answer is 18000 J
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Impulse = Force * times and also Impulse = change in momentum.
Given that the mass does not change, change if momentum = mass * (final velocity - initial velocity)
Given that you know mass and initial velocity (which is the velicity before the cart hits the wall) you need the final velocity (which is the velocity after the cart hits the wall).
Answer: the velocity of the cart after it hits the wall.
The answer is d. Wavelength
