Physics
posted by Mark .
An 80 kg man climbs a 50 mhigh hill in 20 minutes. What is the average power in watts he expends climbing the hill?

F = m*g = 80kg * 9.8N/kg = 784 N.
P = F*d/t = 784 * 50/1200s. = 32.67 J/s
= 32.67 Watts.
Respond to this Question
Similar Questions

physics
A hiker climbs a hill 300m high.If she weighs 50kg,calculate the work she does in lifting her body to the top of the hill 
Physics
Tim and Ray have the same mass and they both climb up the same hill. Tim climbs the hill in 12 minutes and Ray in 22 minutes. a) Who does more work? 
physics
a 70kg man climbs a mountain 1200 m high (measured from the base) in 4 h and uses 9.8 kcal/min. calculate his power consumption in watts. what is his power output in useful work? 
Physics
An 80 kg man climbs a 50 mhigh hill in 20 minutes. What is the average power in watts he expends climbing the hill? 
Physics
An 80 kg man climbs a 50 mhigh hill in 20 minutes. What is the average power in watts he expends climbing the hill? 
Physics
An 80 kg man climbs a 50 mhigh hill in 20 minutes. What is the average power in watts he expends climbing the hill? 
Physics
An 80 kg man climbs a 50 mhigh hill in 20 minutes. What is the average power in watts he expends climbing the hill? 
Physics
A standard man uses a bicycle of mass 30 kg to travel at constant speed along a 5 km long road up a hill. The hill rises 250 m above the starting point and the man needs 30 minutes to get to the top. How much work does the man do during … 
Physics
An 80 kg hiker climbs a 1000 m high hill at a constant speed. If the hiker's body is 25% efficient, how many kg of fat does the hiker burn in climbing the hill? 
Physics
A car of mass 1530 kg traveling at 27.0 m/s is at the foot of a hill that rises 115 m in 4.40 km. At the top of the hill, the speed of the car is 6.0 m/s. Find the average power delivered by the car's engine, neglecting any frictional …