A roller coaster at the top of a hill has a height of 30 m. If it has a mass of

A roller coaster at the top of a hill has a height of 30 m. If it has a mass of 500 kg, what is its potential energy at the top?

A roller coaster at the top of a hill has a height of 30 m. If it has a mass of 500 kg, what is its potential energy at the top?

Correct Answer: 147000 J

Step 1: Identify the formula for potential energy, which is PE = mgh.
Step 2: Identify the values needed for the formula: mass (m) = 500 kg, height (h) = 30 m, and gravitational acceleration (g) = 9.8 m/s².
Step 3: Substitute the values into the formula: PE = 500 * 9.8 * 30.
Step 4: Calculate the multiplication: first, calculate 500 * 9.8 = 4900.
Step 5: Now multiply the result by 30: 4900 * 30 = 147000.
Step 6: The potential energy at the top of the hill is 147000 Joules (J).

Potential Energy – Potential energy is the energy stored in an object due to its height above the ground, calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.