A tram starts from rest atone station and comes to a stop one minute later at the next. It accelerates uniformly at 2m/s2 until it reaches a speed of 20m/s. It travels at this constant speed for a certain time until it decelerates back to rest at 4m/s2. Find the average velocity of the tram over the entire journey.

asked by Anonymous

13 years ago

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1 answer

The average velocity=distance/time, time=60s
distance=2*10^2/2+20*45+4*5^2/2=1050m

answered by Mgraph

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Question

A tram starts from rest atone station and comes to a stop one minute later at the next. It accelerates uniformly at 2m/s2 until it reaches a speed of 20m/s. It travels at this constant speed for a certain time until it decelerates back to rest at 4m/s2. Find the average velocity of the tram over the entire journey.

1 answer

The average velocity=distance/time, time=60s
distance=2*10^2/2+20*45+4*5^2/2=1050m

Mgraph · Accepted Answer

The average velocity=distance/time, time=60s distance=2*10^2/2+20*45+4*5^2/2=1050m