4. A ball is thrown upward with an initial velocity of 9.8 m/s from of a building. a. Fill in the table below showing the ball's position, velocity, and accel eration at the end of each of the first 4 s of motion.

Time

(s)

1

2

3

Position

(m)

4.9

0

- 17.7

Velocity (m/s)

0

- 9
- 19

b. In which second does the ball reach the top of its flight?

c. In which second does the ball reach the level of the roof, on the way down?

Acceleration (m/s^ 2 )

The variables for this experiment include mass, volume and the materials in the various balls, as well as their densities. in part iii, you will be investigating the questionable baseball. use the drop-down menus to complete the sentences and identify the independent and dependent variables. in part iii, the independent variable, the one that is intentionally manipulated, is . in part iii, the dependent variable, the one that you measure the response in, is

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.