A car traveling at 15 m/s starts to accelerate after 3 seconds. What is the car's acceleration?
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Explanation:
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Given :
v ( final velocity ) = 0 m/s
u ( initial velocity ) = 15 m/s
t ( time ) = 10 sec
To find :
Acceleration
Solution :
We know that,
: a =
: a = -1.5 m/s²
[ here negative sign shows opposite direction ]
Hence, acceleration is -1.5 m/s²
Acceleration is the rate of change of velocity.
Its S.I unit is m/s².
It is of three types :
★ Negative acceleration
★ positive acceleration
★zero acceleration
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