EXAM 2

Question 1

PROJECTILE MOTION

Answer 1

W/O AIR RESISTENCE AND GRAVITY, WOULD BE LINEAR.

-45 DEGREE IS OPTIMAL ANGLE FOR DISTANCE.

Question 2

DRAG FORCES

Answer 2

GREATER THAN 45 DEGREE CREATES DRAG.

• FORM DRAG
• SURFACE DRAG
• WAVE DRAG

Question 3

FORM DRAG

Answer 3

DRAG DUE TO SHAPE OF OBJECT

Question 4

SURFACE DRAG

Answer 4

THE FRICTION OF SURFACE

Question 5

WAVE DRAG

Answer 5

DUE TO DENSITY DIFF OF 2 FLUIDS

Question 6

LIFT FORCES

Answer 6

FORCE ACTING ON A BODY IN A FLUID IN A DIRECTION.

LESS THAN 45 DEGREES CREATE LIFT.

Question 7

MAGNUS EFFECT

Answer 7

LIFT FORCE CREATED BY SPIN

• LIFT FORCE DIRECTED FROM HIGH TO LOW PRESSURE.
• HIGH PRESSURE AND LOW VELO ON OBJECT SPINNING OPO OF SPIN

Question 8

HYDRODYNAMICS / AERODYNAMICS

Answer 8

BECOMES MORE HYDRO AND AERODYNAMICS

• SHAPE:LONGER
• LAB: DOGGIE PADDLE CREATE DRAG FORCE

Question 9

Center OF GRAVITY

Answer 9

POINT OF BODY WHERE MASS IS DISTRIBUTED.

-NO FIXED POINT.

Question 10

CENTER OF BUYANCY

Answer 10

POINT WHERE YOUR BUYANT PARTS ARE DISTRIBUTED.

• SINK WITH MUSCLE
• FLOAT WITH FAT AND AIR.
• FLOAT WITH COB NO COG

Question 11

KINETIC LINK PRINCIPLE

Answer 11

TRANSFER OF ENERGY FROM THE MOST PROXIMAL TO MOST DISTAL TO GENERATE MOST FORCE.
-*BLOCKING ALLOWS TRANSFER OF ENERGY MORE EFFICIENT BY STOPPING LARGE SEGMENT AND FORCE ROTATING ROUND IT.