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प्रश्न
Derive the equation
S = ut+ `1/2` at2
Using a speed- time graph
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उत्तर

The area enclosed under a velocity time curve gives the distance covered by a moving body. So total distance S covered by a uniformly accelerating body is given by area of trapezium OSQP.
S = area of trapezium OSQP.
AREA of rectangle OSRP + area of triangle PRQ.
S = OP x OS + `1/2` PR xQR.
s = u x t + `1/2` x t x at
S = ut + `1/2` at2
This is known as second equation of motion.
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संबंधित प्रश्न
What type of motion is represented by the following graph ?

Multiple choice Question. Select the correct option.
The slope of displacement – time graph represents.
Diagram shows a velocity – time graph for a car starting from rest. The graph has three sections AB, BC, and CD.

In which section, car has a zero acceleration?
How does the slope of a speed-time graph give the acceleration of a body moving along a straight line?
Given on th e side are a few speed - time graphs for various objects moving along a stra ight line. Refer below figure. (a), (b), (c) and (d).
Which of these graphs represent
(a) Uni form motion
(b) Motion with speed increasing
(c) Motion with speed decreasing and
(d) Motion with speed oscillating.?
Interpret the following graph:
Given below are the speed -time graphs. Match them with their corresponding motions :
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(a) Uniformity retared motion |
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(b) Non-uniformity acceleration |
![]() |
(c) Non-uniform motion |
![]() |
(d) uniform motion |
Draw velocity-time graph to show:
Acceleration
Write a sentence to explain the shape of graph.
What does the slope of velocity-time graph represent?
The area under the v-t graph represents a physical quantity that has the unit.




