Answer to Question #51456 in Mechanics | Relativity for leehyunae

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1.a particle moves on a circle in accordance w/ the eqn. s=t^4 - 8t, where s is the displacement in feet measured along the circular path and t is in seconds. 2 seconds after starting from rest the total acceleration of the particle is 48√2 ft/sec^2. Conpute for the radius of the circle.
2. As you drive down the road at 17 m/s, you press at the gas pedal and speed up with the uniform acceleration of 21.12 m/s^2 for .65 s. If the tires on your car have a radius of 33 cm what is their angular displacement during the period of acceleration