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ICSE Class 9 Answered

what does the negative sign of acceleration indicate?
Asked by ipsaranipradhan900 | 24 Apr, 2021, 11:47: AM
answered-by-expert 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, 08:51: PM
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