ICSE Class 9 Answered
what does the negative sign of acceleration indicate?
Asked by ipsaranipradhan900 | 24 Apr, 2021, 11:47: AM
Expert Answer
Acceleration is rate of change of velocity .
If a is acceleration and v is velocity , then we have , a = dv/dt
( dv/dt means ia n small time interval , velocity changes from v to v +dv )
If acceleration a = 0 , dv/dt = 0 , i.e., velocity is uninform and velocity remains constant
If acceleration a > 0 , dv/dt > 0 , i.e., velocity is keep on increasing
If acceleration a < o , dv/dt < 0 , i.e., velocity is keep on decreasing
Answered by Thiyagarajan K | 24 Apr, 2021, 20:51: PM
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