A Vehicle is accelerating on a straight road. It's velocity at any instant is 30 km per hour, after 2 seconds, it is 33.6 km per hour and after further 2 seconds, it is 37.2 km per hour. Find the acceleration of vehicle in meter per second square. Is the acceleration uniform?
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Answer:
Given velocity v
1
=30km/h=8.33m/s
velocity v
2
=33.6km/h=9.33m/s
velocity v
3
=37.2km/h=10.33m/s
Time interval between v
1
and v
2
= 2s and v
2
and v
3
=2 s
Now acceleration a
12
=
2
9.33−8.33
=0.5m/s
2
similarly acceleration a
123
=
2
10.33−9.33
=0.5m/s
2
Now the net acceleration a
12
=
4
10.33−8.33
=0.5m/s
2
Yes the acceleration is uniform.
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