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The angular acceleration of a rotating rigid body is given by a = (7.0 2.0t) rad/s². If the body starts rotating from rest at t = 0, answer the following. (a) What is the angular velocity? (Use the following as necessary: t. Assume t is in seconds and is in rad/s. Do not include units in your answer. Enter a mathematical expression or equation with exact values.) @= (b) What is the angular position? (Use the following as necessary: t. Assume t is in seconds and is in radians. Do not include units in your answer. Also assume the body starts at 0 rad. Enter a mathematical expression or equation with exact values.) 0 = (c) What angle (in rad) does it rotate through in 2.0 s? (Indicate the direction with the sign of your answer. Round your answer to at least 2 decimal places.) rad (d) What is the angular position at t = 2.0 s? (Give your answer in degrees counterclockwise from the +x-axis, where 0° lies along the +x-axis.) counterclockwise from the +x-axis