8/7/2019 The Equation of linear motion

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The Equation of linear motion

Relationship of Displacement,

Velocity and Acceleration with Time

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The Equation of linear motion

u = initial velocity

v = final velocity

t = time taken

s = displacement

a = constant accleration

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8/7/2019 The Equation of linear motion

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5. From

6. Rearranging the equation we getAverage velocity =

Subtitute into

5. Hence,

6. Hence,

8/7/2019 The Equation of linear motion

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Equation of Linear Motion

S = average velocity x time taken

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Problem solving

A driver accelerates his car from 20 ms-1 with an

acceleration of 2ms-1. What is his velocity

after 8 second?

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8/7/2019 The Equation of linear motion

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8/7/2019 The Equation of linear motion

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Problem solving

A sprinter reaches his top velocity in 3 seconds

after starting from rest. He covers a

displacement of 24 m in the 3 seconds. What

is his acceleration? (Assume his acceleration is

uniform.)

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Problem solving

A sports car accelerates from rest and covers a

distance of 90m in 6 s. What is its

acceleration??