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Answer:
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Explanation:
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Answered by
2
Answer:
1) (1)When a body is changing its velocity at a constant rate, then the body is said to be moving with uniform acceleration.
(2)When a body is changing its velocity at different rates, then the body is said to be moving with non-uniform acceleration.
2)Initial speed u=80 km/h=80×
18
5
=22.22 m/s
Final speed v=60 km/h=60×
18
5
=16.67 m/s
Using v=u+at
Or 16.67=22.22+α×5
⟹ a=−1.1 m/s
2
3)Given: t=10 min=10×60=600s
Initial speed of train is given as: u=0 ms
−1
Final speed of train is given as: v=40 km h
−1
=
3600
40×1000
=11.1 ms
−1
Now acceleration is given by the relation:
a=
t
v−u
=
600
11.1−0
=0.0185 ms
−2
I hope it help you...
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