oscillating spring mass systems can be used to experimentally determine an unknown mass without using a mass balance. a student
1 answer:
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Answer:
49.32km/h
Explanation:
Given a man drives a car a distance of 200km at an average speed of 44km/h
We know that
initially
time=4.54 hours
Now Given the total trip should be completed in 9 hours
the time taken to complete the second part of the trip is 9-4.54=4.46 hours
Given the distance travelled in the second half is 220km
We know that
average speed = 49.32 km/h.