A car is moving on a straight road at a uniform acceleration. The velocity of the car at different times is given below. Draw its velocity time graph and calculate its acceleration and also find out the distance covered by it in 30 seconds.
t Time(s) 0 10 20 30 10
v speed (ms) 5 10 15 20 25 30
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Answer:
(i) Acceleration of the car = slope of AB=
10−0
24−4
=
10
20
=2m/s
2
(ii) Distance travelled by the car in 10s= area of trapezium OABC
=
2
1
×(OA+BC)×OC
=
2
1
×(4+24)×10=140m
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