4. A ball is thrown straight up at initial speed of 5 m/s and falls down to the same start point. Neglect any effects due to air resistance. A) What is the velocity of the ball at the top of its flight? (1.5 pts) B) What is the acceleration of the ball at the top of the flight? (1 pts) C) Calculate the total time of the flight. (1.5 pts)

A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.88 m/s2 for 19.0 s. 2. Maintain a constant velocity for the next 1.10 min. 3. Apply a constant negative acceleration of ?8.05 m/s2 for 6.80 s. (a) What was the total displacement for the trip? m (b) What were the average speeds for legs 1, 2, and 3 of the trip, as well as for the complete trip?

A certain freely falling object, released from rest, requires 1.40 s to travel the last 20.5 m before it hits the ground. (a) Find the velocity of the object when it is 20.5 m above the ground. (Indicate the direction with the sign of your answer. Let the positive direction be upward.) m/s(b) Find the total distance the object travels during the fall. m

You are standing on a circular track that is 315 m long. You begin jogging at the start line and keep jogging until you complete one full lap and stop at the same point you started at. - What is the total distance you travel?  - What is your final displacement?    A world class sprinter ran 200 m in 21.75s. What was her average speed? (m/s)