Answers

2016-02-20T20:00:30+05:30
means that velocity is changing by 2 m/s² . 
because acceleration is change in velocity.
 
i hope it helps......
0
2016-02-20T20:38:41+05:30
Hello !
Acceleration of -2 m/s² means retardation or the decreasing acceleration
It means if a body is moving at a particular velocity ,its speed or the velocity will decrease be 2 m/sec in each second as it is moving.
I hope u have got it !
Thankyou
0