Answer:
266.67 J/s
Explanation:
Work is said to be done when a force is applied to a certain object. It is given by the expression:
Workdone = Force × distance
However, the power (P) is the quantity or amount of work-done per time which is mathematically expressed as:
P = [tex]\frac{Workdone}{time}[/tex]
Given that:
time = 2.5 hours = (2.5 × 3600) seconds = 9000 seconds
Force = 32 N
distance = 75 km = (75 × 1000) m = 75, 000 m
∴ Workdone = 32 × 75, 000
Workdone = 2,400,000 Joules
Power = [tex]\frac{2,400,000}{9000}[/tex]
Power = 266.67 J/s
Answer:
Explanation:
Given:
Force, f = 32 N
Distance, d = 75 km
1 km = 1,000 m
75 km × 1000 m/1 km
= 75,000 m
Time, t = 2.5 hours
60 secs = 1 min
60 mins = 1 hour
2.5 hours × 60 mins/ 1 hour × 60 sec/1 min
= 9,000 secs
Power = energy/time
Energy = force × distance
Power = (32 × 75,000)/9,000
= 266.67 W
