SUMMARY
The energy required to elevate a 1,112 kg car to a height of 1.2 km is calculated using the potential energy formula PE = mgh. The correct calculation, using the more precise gravitational constant of 9.81 m/s², results in an energy value of 13,090,464 Joules, which can be expressed in scientific notation as 1.31E7 Joules. This value is rounded to three significant figures as required by the problem statement.
PREREQUISITES
- Understanding of potential energy (PE) and kinetic energy (KE) concepts
- Familiarity with the formula PE = mgh
- Knowledge of significant figures in scientific calculations
- Basic proficiency in unit conversion (e.g., kilometers to meters)
NEXT STEPS
- Study the implications of significant figures in scientific calculations
- Learn more about gravitational potential energy calculations
- Explore the differences between potential energy and kinetic energy
- Investigate the impact of using different values for gravitational acceleration
USEFUL FOR
This discussion is beneficial for physics students, educators, and anyone interested in understanding energy calculations related to gravitational potential energy.