unit 1

Question 1

acceleration for objects in free fall

Answer 1

g, always -9.8 m/s^2 downward TTC of the earth, acceleration for object in free fall when there is no other interaction between object and earth

Question 2

if height of drop is doubled then the time in air will be ___ the original time

Answer 2

square root of 2

Question 3

if height of drop is doubled then the velocity is ____

Answer 3

square root of 2V

Question 4

horizontally launched objects

Answer 4

-horiz and vertical motion are independent
-time is the common link between them
-velocity in the c direction is constant
-y velocity increases, in free fall (a=g)

Question 5

if velocity is negative and acceleration is positive, motion

Answer 5

slows down

Question 6

if both velocity and acceleration are positive, motion

Answer 6

speeds up

Question 7

why does a small angle have a small range

Answer 7

the horizontal component of the velocity is large but the time in air is small

Question 8

why does a too big angle make a small range

Answer 8

the horizontal component of the velocity is very small and the time in air is large

Question 9

complementary angles have the same range

Answer 9

like 25 and 65, 20 and 70