2. Moving ocean water exerts a force of 375 N on a boat, causing the boat to move a distance of 34.7 m in 8.34 s. What power doe
s the boat produce in kW?
Knowns Unknown
d = ________________ t = _________________ P = ?
F = ________________
Solve for the Unknown (Use the definition of Power)
Knowns Unknown
d = ________________ t = _________________ P = ?
F = ________________
Solve for the Unknown (Use the definition of Power)
1 answer:
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Answer:
5.625km/h
Explanation:
We are given that
Distance between home and market, d=2.5 km
Speed, v1=5km/h
Speed, v2=7.5 km/h
We have to find the average speed of the man over the interval of time 0 to 40min.
Time,
Using the formula
1 hour =60 min
Distance traveled by man in 10 min with speed 7.5 km/h=
Therefore,
Total distance covered=2.5+2.5/2=3.75 km
Time=40 min=40/60=2/3 hour
Average speed=
Average speed=