5.4

12th)

Suppose that a particle moves along a straight line with velocity v(t) = 12 5t, where 0 S t 5 1.5 (in meters per second). Find the formula for the displacement of the particle and the total distance it has traveled at time t = 1.5 seconds. Total distance traveled: :] meters in 1.5 seconds A ball is thrown upward from a height of 8.7 rn at an initial speed of 67 ml sec. Acceleration resulting from gravity is 9.8m/sec2. Neglecting air resistance, solve for the velocity v(t) and the height Mt) of the ball t seconds after is is thrown. Velocity v(t) = meters/second A 25-year old woman burns 150 30t call hr while walking on her treadmill. Her caloric intake from drinking Gatorade is 115t calories during the tth hour. What is her net decrease in calories after walking for 3 hours