A. How long did it take the shuttlecock to fall to the bottom? 0.78 B. What was the acceleration of the shuttlecock during its fall?
- 9.81
C. What was the velocity of the shuttlecock when it hit the bottom? -7.98
(Note: This is an example of instantaneous velocity.)
D. What is the mathematical relationship between these three values?

8. Make a rule: If the acceleration is constant and the starting velocity is zero, what is the
relationship between the acceleration of a falling body (a), the time it takes to fall (t), and its
instantaneous velocity when it hits the ground (v)?

Express your answer as an equation relating v, a, and t: v=

An object is located 30.0 cm from a concave mirror. the focal length is 15.0 c,. what is the image distance? a. 30.0 cm b. -10 cm c. 10.0 cm d. -30.0 cm

A33.1 g copper object is launched from a 1.5 m 30° steel incline positioned on the floor by being pulled up a string attached to a 50.0 g mass suspended vertically over a pulley. the object is projected towards a glass table where it lands when it is at the point along its trajectory with the lowest speed. it comes to a halt when it clears the opposite edge of the table. it then falls and lands on 9 physics texts each 5 cm thick that are stacked on the floor on the opposite side of the table. assume that the table does not have a ledge and the rectangular object experiences 0.05 n of air resistance as it falls towards the books. how far and how long did the object travel and how fast does it hit the books. assume that at the moment the copper object leaves the incline, the massless string and ideal pulley break off

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f