draw a graph for acceleration against time for a uniformly accelerated motion how can it be used to find the change in speed in a certain interval of time
Answers
Answer:
to draw the graph first u should tabulate the values of speed and time
speed values on x-axis
time values on y-axis
GRAPH.
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6kmph. 8kmph. 10kmph
Explanation:
so on like this
to find out speed you should use the formula
speed =distance/time
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Answer:
The graph (sample) is in the attachment
Let the vertical line represent the Acceleration and the horizontal line represent the time
O is the origin
There is positive Acceleration from O to A and Acceleration is constant from A to B
Also, there is deceleration from B to E
Now,
Let the time intervals be constant.
O to C = 5 sec
C to D = 5 sec
D to E = 5 sec
Also at O the initial velocity is o m/sec
From this (situation from O to C)
Now,
From O to C :-
Time = 5 seconds
Initial velocity = u m/sec
Final velocity = v m/sec
So,
a = v - u / time between O to C
So, in this situation
Next situation :-
From D to E
Time is 5 sec
Initial velocity = u m/sec
Final velocity = v m/sec
But,
Since there is deceleration, u will be greater than v
So,
A= v-u/5
So,
From this 5a = v-u
V-u is the change in the velocity.
From the above two situations
Change in velocity = Acceleration * time
So,
This the final derivation from the above given condition.