Question
What do you understand by the term acceleration? When is the acceleration
1. positive
2. negative?
1. positive
2. negative?
✓
Answer
Acceleration: "Rate of change of velocity with respect to time" is called acceleration. S.I. unit of acceleration is m s-2.
Positive acceleration: When velocity of a body increases with time, then acceleration of the body is said to be positive acceleration.
Negative acceleration: When the velocity of a body decreases with time, then acceleration of the body is said to be negative acceleration.
Positive acceleration: When velocity of a body increases with time, then acceleration of the body is said to be positive acceleration.
Negative acceleration: When the velocity of a body decreases with time, then acceleration of the body is said to be negative acceleration.
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