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Solved: (a) How long will it take an 850-kg car with a
Chapter 7, Problem 38(choose chapter or problem)
Problem 38PE
(a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1 hp = 746 W) to reach a speed of 15.0 m/ s, neglecting friction? (b) How long will this acceleration take if the car also climbs a 3.00-m-high hill in the process?
Questions & Answers
QUESTION:
Problem 38PE
(a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1 hp = 746 W) to reach a speed of 15.0 m/ s, neglecting friction? (b) How long will this acceleration take if the car also climbs a 3.00-m-high hill in the process?
ANSWER:
Step 1 of 3
First calculate the time required to accelerate a car with mass 850 kg and power output 40.0 hp from zero to 15 m/s.
Then calculate the time required for the car to climb 3.00 m height.
Ignore the friction in all this case.