A car traveling at 46 ft/sec decelerates at a constant 2 feet per second squared. How many feet does the car travel before coming to a complete stop? A particle is moving with acceleration a(t) = 301E + 6. Its position at time t = 0 is 8(0) = 12 and its velocity at time t = 0 is "0(0) = 16. What is its position at time t = 3? Suppose that 211:2 ai- = 60 and 2:22 I),- = 11. Calculate 2112'; 3(11' 4bi + 3. See Example 1 page 217 for a similar example. Collapsing Sums (a) Let ai = 2'. Find _, aiti - di. (b) Let bi = 22. Find >, bitl - bi. See Example 2 page 217 for a similar example.