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ACCELERATION

When Velocity Changes

Galileo concluded that change in velocity with distance is not a constant for free fall of a body

Acceleration as the of change of velocity with

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Average acceleration

Average acceleration is the average change of velocity per unit time.

Check whether the following equation represent Average acceleration 

Question 1

av

Hint

Acceleration of the object at any instant of time is called instantaneous acceleration

Graphical representation of Motion

Question

gr

Position time graph

Hint

Graph is parallel to time axis

Answers

Stationary Object

Uniform Motion

Non Uniform Motion

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Question

vt

Velocity time graph

Hint

Velocity does not change with time

Answers

Stationary Object

Uniform Motion

Non Uniform Motion

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Question

a

Velocity time graph with Positive slope

Hint

Average Acceleration is always same to Instantaneous Acceleration

Answers

Uniform Motion

Uniformly Accelerated Motion

Non Uniformly Accelerated Motion

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Question

vt

Velocity time graph with variable slope

Hint

Acceleration is different in different instants of time

Answers

Uniform Motion

Uniformly Accelerated Motion

Non Uniformly Accelerated Motion

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Question

at

Acceleration time graph

Hint

Graph with constant and positive slope

Answers

Uniform Motion

Uniformly Accelerated Motion

Non Uniformly Accelerated Motion

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Terms from the graphs

Slope of Position Time graph is

Slope of Velocity Time graph is

Area under Velocity Time graph is

Slope of Acceleration Time graph is

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