Question

1. A billiard trick shot artist shoots a cue ball at 4 m/s off a horizontal table at the edge of the Empire State Building. Neglecting air resistance, at the instant before the ball lands in a cup on the ground, what is the horizontal (x component ) of the ball’s velocity? a. 0 m/s b. 4 m/s c. 8 m/s d. 19.6 m/s

2. Mary swims a lap in the 25 m pool, does a kick turn off the wall, and swims another 25 m back. It takes her 50 seconds to get back to where she started. What was her average VELOCITY during those 50 s? a. 0 m/s b. 1 m/s c. 2 m/s d. 50 m/s

3. Mary swims a lap in the 25 m pool, does a kick turn off the wall, and swims another 25 m back. It takes her 50 seconds to get back to where she started. What was her average SPEED during those 50 s? a. 0 m/s b. 1 m/s c. 2 m/s d. 50 m/s

4. You are driving at 14 m/s when you hit the brake to slow for traffic. If 4.0 seconds later you are going 2.0 m/s, what was your average acceleration during those 4 seconds?

                a. 0.0 m/s²

                b. -3.0 m/s²

  c. -4.0 m/s²

                d. -6.0 m/s²

                e. -12 m/s²

                f. -5.5 m/s²

^5. You are driving at 12 m/s when you hit the gas and accelerate to make it through a green/yellow light. If you accelerate at 3 m/s² for 5 seconds, what is your final speed?

                a. 12 m/s

                b. 15 m/s

  c. 17 m/s

                d. 27 m/s

                e. 33 m/s

                f. 45 m/s

Answer 1