3. A body moves in a straight line according to this equation of motion: s(t) = 10t2 4t + 8, where t is measured in seconds and s in meters. 3. What is its position at the end of 5 sec? b. What is the equation for its velocity v at any time t? c. What is its velocity v at the end of 5 seconds? d. What is the equation for its acceleration a at any met? e. What is its acceleration at the end of 5 seconds