<span>Heat
energy is the energy of the motion or vibration of molecules in a substance.
The answer is letter A. A wrecking ball on its way down before it hits a
building is an example of kinetic energy being converted into mechanical energy.
The answer is letter D.</span>
<em>The velocity vector of an object with a centripetal acceleration is never tangent to the circular path is False.</em>
Answer: <em>False</em>
Explanation:
Centripetal acceleration is a feature of objects in uniform circular motion. In that case velocity is along the tangent drawn to the circular path. For an object to be called accelerating its velocity should be variable but speed needn’t.
Even when the speed is constant an object can be accelerating. The direction of velocity of an object in uniform circular motion keeps changing continuously. This change in velocity in uniform circular motion is equal to the centripetal acceleration.
Answer: The answer is 700kg
Explanation:
Answer: B 1/5, D .20
hope this helps let me know if it's wrong
Only some metals are attracted by magnets; these metals are called ferromagnetic is your answer