Answer:
KE = 8.4 kJ
Explanation:
given,
mass of the roller-coaster = 364 Kg
speed of the roller-coaster car = 6.8 m/s
kinetic energy = ?
Kinetic energy is the energy related to the motion of the body.
[tex]KE = \dfrac{1}{2}mv^2[/tex]
[tex]KE = \dfrac{1}{2}\times 364 \times 6.8^2[/tex]
KE = 8415.68 J
KE = 8.4 kJ
Hence, the kinetic energy of the roller coaster of the moving car is equal to KE = 8.4 kJ
