Chapter 3 Review

Question 1

TRUE OR FALSE

If the degrees of one projectile added with the other equal 90, they’ll have the SAME RANGE and FINAL SPEED

Answer 1

TRUEEE

Question 2

verticle motion

Answer 2

independent of horizontal motion

Question 3

Horizontally launched projectile at an angle

Answer 3

USE:
^t=-2Vyi/g
^x= (Vx)(^t)

Question 4

Relativity

Answer 4

USE:

V’=Vobject-Vobserver

Question 5

when in doubt…

Answer 5

DRAW A DAMN TRIANGLE!!!

Question 6

When drawing a triangle…

Answer 6

start with second direction (west of north, use north) or with longest portion ( 4 east, 9 south; use south)

Question 7

To find magnitude and velocity of resultant vector…

Answer 7

Add X’s and Y’s, then solve for theta (inverse tan)

Question 8

Ex. of object with same velocity vector and acceleration

Answer 8

Car accelerating forward

Question 9

Ex. of object with different velocity vector than acceleration

Answer 9

throwing a ball up

Question 10

Motion of ball dropped by boy as seen by observer

Answer 10

parabolic

Question 11

Motion of ball dropped by boy as seen by boy

Answer 11

0 m/s