derive an expression for the distance travelled by a body moving with a uniform motion "a" having initial velocity "u" and final velocity "v" after a time "t" from its velocity - timegraph
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Answer:
Let us Consider the linear motion of a body with an initial velocity u. Let the body accelerate uniformly and acquire a final velocity v after time t.
Here, The velocity-time graph is a straight line AB
So, According to the velocity-time graph is
At t=0, initial velocity =u=OA
At t=t, final velocity =v=OC
The distance S traveled in time t = area of the trapezium OABD
s=(
2
1
)×(OA+DB)×OD
s=(
2
1
)×(u+v)×t
Since v=u+at
s=(
2
1
)×(u+u+at)×t
s=ut+(
2
1
)at
2
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