Mypages.valdosta.edu/bergstrm/audesrk21.htm
Answer:
<em>The increase of kinetic energy is 108,000 J</em>
Explanation:
<u>Kinetic Energy
</u>
Is the energy an object has due to its state of motion. It's proportional to the square of the speed and the mass.
The equation for the kinetic energy is:

Where:
m = mass of the object
v = speed at which the object moves
The kinetic energy is expressed in Joules (J)
A car has a total mass of m=1,200 kg and travels at v1=12 m/s. Then it increases its speed at v2=18 m/s.
It's required to compute the increase of kinetic energy. We'll calculate both energies K1 and K2 and then subtract them.


The increase of kinetic energy is:


The increase of kinetic energy is 108,000 J
Answer:
A) Have more coils of wire
F) Use a more powerful battery
PE = mgh,
Mass, m = 5.24kg, g ≈ 9.8m/s², h = 1.63m
= 5.24 * 9.8 *1.63 = 83.70376 ≈ 84
PE ≈ 84 J