Question: Suppose that an object moves along a coordinate line so that its directed distance from the origin after t seconds is 2t + 1 feet.

Suppose that an object moves along a coordinate line so that its directed distance from the origin after t seconds is √2t + 1 feet.
(a) Find its instantaneous velocity at t = α, α > 0.
(b) When will it reach a velocity of ½ foot per second? (see Example 5.)

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