2-D Motion Test

Question 1

If a ball is thrown from the same height but with different speeds, the time it will take the balls to reach the ground will be

Answer 1

the same

Question 2

The magnitude of a ball’s vertical acceleration during the total time a ball is in the air

Answer 2

stays the same, always 0

Question 3

The velocity that a ball leaves at, it’s initial velocity, is the same as

Answer 3

the velocity that the ball returns to the ground at

Question 4

The velocity at max height in the y direction is always

Answer 4

0

Question 5

How much time elapses before the ball hits the ground equation:

Answer 5

square root of 2y/g, or use the 1st kinematic equation

Question 6

How far is the ball from the launch point equation

Answer 6

x=Vox t

Question 7

Acceleration in the x direction is always

Answer 7

0

Question 8

Acceleration in the y direction is always

Answer 8

-9.8

Question 9

The x component of velocity is always

Answer 9

constant

Question 10

Y component of velocity _ as it goes up

Answer 10

decreases

Question 11

At the top the y component of velocity is

Answer 11

0

Question 12

Y component of velocity _ as it comes down

Answer 12

increases

Question 13

How much later does it hit the ground? equation

Answer 13

y= 1/2 g t