1. Imagine that you take a 200.0 km trip. You travel the first half of the trip at 100.0 km/hr. Your speed for the second half is 50.0 km/hr. How much time does the entire trip take? 2. In the above problem, what is your average speed in km/hr and m/s

Explanation:

Speed = Distance/Time

Given

Distance = 200km

Total speed = 100+50 = 150km/hr

Time = Distance/Speed

Time = 200/150

Time = 1.33hr

b) Average speed in km/hr is 150km/hr

Convert to  m/s

150km/hr = 150 * 1000 m/1 * 3600s

150km/hr = 150,000/360

150km/hr = 416.67m/s

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min