The problem that follow involve straight-line motion. The time t is in seconds unless othe...

The problem that follow involve straight-line motion. The time t is in seconds unless otherwise stated.

Problem

A powerboat being tested for maneuverability is started from rest at / -0 and driven in a circular path 12 m in radius. The tangential component of die boats acceleration as a function of lime is at = 0.4/ m/s2.

(a) What are the boat's velocity and acceleration in terms ol normal and tangential components at t =4 s?

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(b) What distance does the boat move along its circular path from t = 0 to t = 4 s?