An electric train moves from rest with a uniform acceleration of 1.5m/s square for the first ten seconds and continue to accelerate at 0.5 m/s square for a furt
Physique/Chimie
aisha6313
Question
An electric train moves from
rest with a uniform
acceleration of 1.5m/s square
for the first ten seconds and
continue to accelerate at 0.5
m/s square for a further 20s,it
continue at constant speed for
90s and finally take 30s to
decellerate uniforming to rest.
(a) draw a graph of speed against time for
the journey (b) from your graph or
otherwise deduce the total distance
travelled (c) what is the average speed of
the whole journey
rest with a uniform
acceleration of 1.5m/s square
for the first ten seconds and
continue to accelerate at 0.5
m/s square for a further 20s,it
continue at constant speed for
90s and finally take 30s to
decellerate uniforming to rest.
(a) draw a graph of speed against time for
the journey (b) from your graph or
otherwise deduce the total distance
travelled (c) what is the average speed of
the whole journey