If the velocity is \(\overline{V}\) = \(2 \hat{i}+t^{2} \hat{j}-9 \hat{k}\) then the magnitude of acceleration at t = 0.5s is _______.
A. 1ms-2
B. 2 ms-2
C. zero
D. -1ms-2
Answer:A
If the velocity is \(\overline{V}\) = \(2 \hat{i}+t^{2} \hat{j}-9 \hat{k}\) then the magnitude of acceleration at t = 0.5s is _______.
A. 1ms-2 B. 2 ms-2 C. zero D. -1ms-2