If the velocity is \(\vec{v}\) = 2\(\vec{i}\) + t²\(\vec{j}\) – 9\(\vec{k}\), then the magnitude, of acceleration at t = 0.5 s is……….
A. 1 ms-2
B. 2 ms-2
C. zero
D. -1 ms-2
Answer:A
If the velocity is \(\vec{v}\) = 2\(\vec{i}\) + t²\(\vec{j}\) – 9\(\vec{k}\), then the magnitude, of acceleration at t = 0.5 s is……….
A. 1 ms-2 B. 2 ms-2 C. zero D. -1 ms-2