If the velocity isvec(v) = 2 hat(i) + t^(2) hat(j) - 9 vec(k),then themagnitude of acceleration att = 0 . 5 sis:

If the velocity isvec(v) = 2 hat(i) + t^(2) hat(j) - 9 vec(k),then the

1.	If the velocity isvec(v) = 2 hat(i) + t^(2) hat(j) - 9 vec(k),then themagnitude of acceleration att = 0 . 5 sis:
Answer» `1ms^(-2)` `2 MS^(-2)` zero `-1 ms^(-2)` SOLUTION :`a = (dv )/(dt) =(d) /( dt)(2hati+ t^2hatj- 9 hatk )= 2 t hatj` at ` t= 0.5s impliesa= 2( 0.5 ) =1 ms^(-2)`