9. Work & Energy
Net Work & Work-Energy Theorem
9. Work & Energy Net Work & Work-Energy Theorem
22PRACTICE PROBLEM
A train starting from rest with a mass of 500,000 kg attains a speed of 30 m/s at a distance of 1500 m. It experiences a thrust of 90 kN from each of its three engines. Calculate the increase in the thermal energy caused by rolling friction.
A train starting from rest with a mass of 500,000 kg attains a speed of 30 m/s at a distance of 1500 m. It experiences a thrust of 90 kN from each of its three engines. Calculate the increase in the thermal energy caused by rolling friction.