Physics Study Guide

Question 1

Vix

Answer 1

Initial horizontal velocity.

Question 1

Viy

Answer 1

Initial vertical velocity.

Question 2

ay

Answer 2

Gravity.

Question 3

t (up)

Answer 3

Time up (half)

Question 4

Xx

Answer 4

Distance

Question 5

Xy

Answer 5

Vertical Distance

Question 6

SOH

Answer 6

SIN= opp/hyp

Question 7

CAH

Answer 7

COS= adj/hyp

Question 8

TOA

Answer 8

TAN= opp/adj

Question 9

Why does ax=0?

Answer 9

There is no air resistance therefore there is nothing to push it.

Question 10

Why is Vx constant?

Answer 10

There is no acceleration in the horizontal direction.

Question 11

Why does Vy=0 at the apex?

Answer 11

As it moves, gravity is working against it and slowing it down in the process, therefore bringing it to a full stop at the apex.

Question 12

Why is “Xy” positive during the first half, but negative during the second half?

Answer 12

It is positive at first because it is moving upward during the first half, and during the second half it is moving downwards and against gravity, therefore making it a negative number.

Question 13

Why is gravity negative?

Answer 13

Gravity is going down.