10. A stone is thrown vertically with a velocity of 14 m/s [down] from a bridge. How long will the stone take to reach the water 21 m below? a. 0.4 s b. 1.1 s c. 1.6 s d. 2.2 s e. none of the above

1. The position of a particle moving along the x axis is given by x= (21 + 22t - 6.0r) m, where t is in s. What is the average velocity during the time interval t = 1.0 s to t=2.0 s? c. 4.0 m/s -6.0 m/s b. -2.0 m/s d. -8.0 m/s a. e. 8.0 m/s

30 25 20 d 15 (m), 6. 10 12 t (sec) What is the total displacement of the car during the first 10 seconds? a. 35 m b. 2 m O c. 0.5 m Od. 3.5 m O e. 5 m

6. A futsal player leaves the bench and runs 5.0 m [N] and then 4.0 m [W] where she stops after 9 seconds. Gi a. what is the total distance traveled b. what is the displacement of the player c. what is her average speed d. what is her average velocity

A car accelerates from rest for 6 seconds with a constant acceleration of 1.5 m/s?. Find the final velocity of the car. a. 9 m/s. b. 6 m/s. c. 1.5 m/s d. 3 m/s.

3. An object is dropped from a height. a. Describe its velocity as its falls to the ground. b. Describe its acceleration as it falls to the ground.

25. An object has increasing velocity when its acceleration is greater than zero. It has increasing speed when its velocity and acceleration have the same sign. For what times is: a. the velocity of the ball increasing? b. The speed of the ball increasing?

ii. A car slows down uniformly from a speed of 30m/s to rest in 9s. How far did it travel in that time? .. m/s. 132wie. wng w River current N -E

If the velocity is constant towards the right direction, the graph of displacement x vs time t is a A. line with a positive slope. B. line with negative slope. C. parabola in the first quadrant. O D. parabola in the 4th quadrant. An object is moving towards the right direction. Velocity is constant. The graph of velocity vs time t is a line O A. along the t axis B. parallel to the t axis C. parallel to the v axis. O D. with nonzero slope. Velocity of a moving object is towards the right. Velocity is constant. The graph of acceleration a vs time t is a A. line parallel to the acceleration a axis. B. line along the acceleration a axis. C. line along the t-axis. OD.line with positive slope.

16. Sketch the velocity-time graph of the different parts of his motion from the airplane to the ground. [Appendix A] A. Jumps from airplane. B. Reaches terminal velocity. C. Pulls rip-cord to open parachute. D. Parachute is fully open. E. Contacts ground. velocity A B C D E time