ng pu 2 km apart starts from rest and accelerat over 3/5 of the total distance. After reach the maximum speed, the driver steps on brakes and the vehicle decelerates at a constant rate and comes to rest after 2 kr and a total travel duration of 4 min. Anal
ng pu 2 km apart starts from rest and accelerat over 3/5 of the total distance. After reach the maximum speed, the driver steps on brakes and the vehicle decelerates at a constant rate and comes to rest after 2 kr and a total travel duration of 4 min. Anal
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A vehicle traveling between 2 stations that are
2 km apart starts from rest and accelerates
over 3/5 of the total distance. After reaching
the maximum speed, the driver steps on the
brakes and the vehicle decelerates at a
constant rate and comes to rest after 2 km
and a total travel duration of 4 min. Analyze
the motion of the vehicle on a appropriate
speed - time graph and then, calculate:
• The maximum speed observed during the
journey:
m/s
• The duration of acceleration tacc :
s;
• The duration of deceleration tdec :
S
• The acceleration :
m/s2
• and magnitude of the deceleration
m/s?
You may need an speed-time graph for more
accuracy on the following
th
• Change of speed during the 72
second
of motion: Av
m/s
**
Distance covered during the 192
th
second
II
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