Projectile Motion

Question 1

What is projectile motion?

Answer 1

The superposition of two independent motions.

Question 2

What is characteristic about projectile motion in the x direction?

Answer 2

Its motion is uniform.

Question 3

What is the acceleration of a projectile in the x direction?

Answer 3

a=0

Question 4

What is the horizontal equation for projectiles?

Answer 4

xf/t=Vx

Question 5

What is the acceleration of a projectile in the y direction?

Answer 5

Freefall motion -9.8m/s2

Question 6

What is the trig identity for 2 x (cos(θ) x Sin (θ))?

Answer 6

Sin (2θ)

Question 7

What are Newtons 3 laws of motion?

Answer 7

• The law of inertia
• Force Equation
• Action Reaction Law

Question 8

What is the law of inertia?

Answer 8

An object in motion or at rest stays in motion or at rest unless acted on by an outside force.

Question 9

What is inertia?

Answer 9

An objects resistance to motion

Question 10

What is the formula for momentum?

Answer 10

p=mass x velocity

Question 11

What are the si units for mass?

Answer 11

kg

Question 12

What are the si units for velocity?

Answer 12

m/s

Question 13

What is the force equation?

Answer 13

F= (m x ΔV)/ ΔT) or F= mass x acceleration

Question 14

What is the action reaction law?

Answer 14

for every action there is an equal and opposite reaction

Question 15

What do forces come in?

Answer 15

pairs

Question 16

What are the steps to solving a force analysis problem?

Answer 16

• draw a freebody diagram of each object of interest
• resolve all vectors into x and y components
• redraw free body diagram using only x and y components
• sum together like components
• apply newtons second law

Question 17

What are the si units for force?

Answer 17

Newtons

Question 18

What is the equation for centripidal motion?

Answer 18

F=mv2/r

Question 19

What is the importance of Newtons First Law?

Answer 19

It lets us define force

Question 20

What is the importance of Newtons Second Law?

Answer 20

It allows the calculation of force for a motion F=ma

Question 21

What is the importance of Newtons Third Law?

Answer 21

It tells us that forces come in pairs.

Question 22

What is the range equation?

Answer 22

R=Vi2 x Sin(2θ)/g

Question 23

What is the acceleration equation for centripidal motion?

Answer 23

A=v2/r