Jerome solves a problem using the law of conservation of momentum. What should Jerome always keep constant for each object after
2 answers:
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Answer:
1)
75 kmh⁻¹
2)
75 kmh⁻¹
Explanation:
1)
= Speed of train from station A to station B = 80 kmh⁻¹
= distance traveled from station A to station B
= time of travel between station A to station B
we know that
= distance traveled from station B to station C
= Speed of train from station B to station C = 60 kmh⁻¹
Total distance traveled is given as
Total time of travel is given as
Average speed is given as
Given that :
So
2)
= Speed of train from station A to station B = 80 kmh⁻¹
= time of travel between station A to station B
= distance traveled from station A to station B
we know that
= distance traveled from station B to station C
= Speed of train from station B to station C = 60 kmh⁻¹
= time of travel for train from station B to station C
we know that
Total distance traveled is given as
Total time of travel is given as
Average speed is given as
Given that :
So