One kilowatt-hour = 1000 watts = 1000 joules/second
One hour = 60 × 60 = 3600 seconds
One kWh = 3600 × 1000 joules
One kWh = 36 × 100000 joules
One kWh = 3.6 × 10 × 100000 joules
One kWh = 3.6 × 10⁶ joules
Answer: Second option
Answer:
What does that even mean?
Explanation:
Top of first hill:
high PE
low KE
bottom first hill:
low PE
high KE
Friction slows the speed of the roller coaster