t-and-state-which-solutions-are-physically-meaningful-if-time-cannot-be-negative

Question

A robotic arm's displacement from a reference point at time tt minutes satisfies (t−2)2=5(t - $$2)^2 = 5. $$Solve for tt and state which solutions are physically meaningful.

Accepted Answer

Only t=2+5t=2+\sqrt5

Answer

Both t=2+5t=2+\sqrt5 and t=2−5t=2-\sqrt5 are physically meaningful

Answer

No solution

Answer

Only t=2−5t=2-\sqrt5

A robotic arm's displacement from a reference point at time tt minutes satisfies (t−2)2=5(t - 2)^2 = 5. Solve for tt and state which solutions are physically meaningful.

A robotic arm's displacement from a reference point at time $t$ minutes satisfies $(t - 2)^{2} = 5$ . Solve for $t$ and state which solutions are physically meaningful.