Physics Free Fall Quiz

What is the height from which Mr. P drops the medicine ball?

• 1.0 meters

• 2.0 meters

• 3.0 meters

• 4.0 meters

Tags

NGSS.MS-PS2-4

What is the term used to describe the apparent shift in the position of an object when viewed from different angles?

• Reflection

• Parallax

• Refraction

• Diffraction

Why does the medicine ball appear to be above the two-meter stick in the video?

• The stick is not visible in the video

• Due to parallax caused by the camera angle

• Because the stick is shorter than two meters

• The ball is actually higher than two meters

What is the correct symbol for displacement in the Y direction?

• Delta Z

• Delta Y

• Delta V

• Delta X

What is the initial velocity of the medicine ball when it is dropped?

• 0 m/s

• 9.8 m/s

• 2 m/s

• 4.9 m/s

Which equation is used to solve for the final velocity in the Y direction?

• v_f = v_i + at

• s = ut + 0.5at^2

• v_f^2 = v_i^2 + 2aΔy

• v_f = v_i + 2aΔx

Why can't the equation v_f = v_i + at be used to solve for the final velocity in this problem?

• Because the displacement is not given

• Because we don't know the acceleration

• Because we don't know the initial velocity

• Because we don't know the final velocity or the change in time

What mistake did Billy make when calculating the final velocity?

• He used the wrong equation

• He forgot to square the initial velocity

• He made the displacement positive instead of negative

• He ignored the acceleration

What is the correct displacement in the Y direction for the medicine ball?

• 2.0 meters

• -2.0 meters

• 0 meters

• -9.8 meters

What is the final velocity of the medicine ball right before it hits the ground?

• -6.3 m/s

• 6.3 m/s

• 9.8 m/s

• 0 m/s

Tags

NGSS.HS-PS2-1