Q.1 Plot a velocity time graph for the given data and calculate acceleration from it.(03)
Time (in sec) 0 1 2 3 4 5
Distance (in m) 0 20 40 50 80 100
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Answer:
Magnitude of area under the v−t graph gives the distance travelled by the body.
For 0≤t≤4 s :
Displacement S
1
= Area =
2
1
×(20+40)×2+
2
1
×(1+2)×20=90 m
For 4≤t≤5 s :
Displacement S
2
= Area =
2
1
×1×20=10 m
Total distance d=S
1
+S
2
=90+10=100 m
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