Uni Physics
posted by David Gia .
Calculate the power required of a 1230 kg car as it climbs a 18° hill at a steady 92 km h1. The total friction and air resistance is 700 N. Answer in kW, to the nearest whole number.

speed = 92,000/3600 = 25.6 m/s
force = m g sin angle + 700
= 1230*9.81*.309 + 700 = 3729+700 = 4429 N
power = force * speed = 4429*25.6 = 113 KW
Respond to this Question
Similar Questions

Physics
If 7.00hp are required to drive a 1500kg automobile at 66.0 km/h on a level road. What power is necessary to drive the car at 66.0 km/h down a 1.00 % grade? 
physics
If 7.00hp are required to drive a 1500kg automobile at 66.0 km/h on a level road. What power is necessary to drive the car at 66.0 km/h down a 1.00 % grade? 
physics
Calculate the power required of a 1190 kg car as it climbs a 11° hill at a steady 103 km h1. The total friction and air resistance is 700 N. Answer in kW, to the nearest whole number. 
Physics
A 1800kg car experiences a combined force of air resistance and friction that has the same magnitude whether the car goes up or down a hill at 28 m/s. Going up a hill, the car's engine produces 52 hp more power to sustain the constant … 
Physics
A car of mass 1100 kg starts from rest at sea level and climbs a hill of altitude 50 m. At the top of the hill the car has a speed of 25 m/s. From the top of the hill the driver turns off the engine and coasts down to an altitude of … 
Physics
A car of mass 1100 kg starts from rest at sea level and climbs a hill of altitude 50 m. At the top of the hill the car has a speed of 25 m/s. From the top of the hill the driver turns off the engine and coasts down to an altitude of … 
Physics
A car of mass 1100 kg starts from rest at sea level and climbs a hill of altitude 50 m. At the top of the hill the car has a speed of 25 m/s. From the top of the hill the driver turns off the engine and coasts down to an altitude of … 
Physics
A car of mass 900.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 49.7 km/hr (13.8 m/s), the net power which the engine supplies is 4300.0 W (in addition to the extra power required to make up … 
Physics
A car of mass 900.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 49.7 km/hr (13.8 m/s), the net power which the engine supplies is 4300.0 W (in addition to the extra power required to make up … 
Physics
A car of mass 920.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 48.2 km/hr (13.4 m/s), the net power which the engine supplies is 5900.0 W (in addition to the extra power required to make up …