Position-Time Graph: Acceleration

Position time graph for Acceleration

(I) Positive Acceleration

When distance covered by a moving object goes on increasing with time, the object is said to be have positive acceleration.

Positive Acceleration
Positive Acceleration

(II) Negative Acceleration

When distance covered by a moving object goes on decreasing with time, the object is said to be have negative acceleration.

Negative Acceleration
Negative Acceleration

(III) Zero Acceleration

When the moving object covers equal distance in equal time, the object is said to be have zero acceleration.

Zero Acceleration
Zero Acceleration

Velocity-Time Graph For An Accelerated Motion

(I) Zero Acceleration

In case of zero acceleration the velocity of the object does not change with time.

Zero Acceleration
Zero Acceleration

(II) Positive Acceleration

(a) If the object is moving with positive acceleration having zero initial velocity-

Positive Acceleration
Positive Acceleration

(b) If the object is moving with positive acceleration having some initial velocity.

Positive Acceleration
Positive Acceleration

(III) Increasing Acceleration

In case of increasing acceleration, the velocity of the object goes on increasing exponentially (non linearly).

Increasing Acceleration
Increasing Acceleration

(IV) Negative Acceleration

(a) In case of negative acceleration, the velocity of the object decreases linearly with time.

Negative Acceleration
Negative Acceleration

(b) If the object is moving with positive acceleration having some negative initial velocity.

Negative Acceleration
Negative Acceleration

(c) If the object is moving with negative acceleration having some positive initial velocity.

Negative Acceleration
Negative Acceleration

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