Answer:
216J
Explanation:
Given parameters:
Velocity of the car = 80ft/s
Mass of car = 18kg
Unknown:
Kinetic energy of the car =?
Solution:
Kinetic energy is the energy in motion of a body. It can be derived using the expression below:
K.E = [tex]\frac{1}{2} m v^{2}[/tex]
where m is the mass
v is the velocity
To solve, convert 80ft/s to m/s;
1ft/s = 0.3m/s
80ft/s = 80 x 0.3 = 24m/s
Now insert parameters and solve;
k.E = [tex]\frac{1}{2}[/tex] x 18 x 24 = 216J
