Physics - Translational Motion

Question 1

4 kinematic equations

Answer 1

1) Vf=Vi+at
2) Vf^2=Vi^2+2ax
3) delta x= Vit + 1/2at^2
4) delta x= 1/2 (Vi+Vf)t

Question 2

projectile motion : vertical component

Answer 2

VSin0

Question 3

projectile motion: horizontal component

Answer 3

VCos0

Question 4

projectile motion, vertical component, initial speed and speed at any given time

Answer 4

Viy=ViSin0

at any time: Vy=Viy +at

Question 5

projectile motion, horizontal component, initial speed and speed at any given time

Answer 5

Vix=ViCos0

at any time: Vx=Vix

Question 6

frictional forces: static equation

Answer 6

Ff,max=MusFN

Question 7

frictional forces: kinetic equation

Answer 7

Ff=MukFN

Question 8

Newtons 2nd law of force

Answer 8

F= ma

Question 9

Newton’s 3rd law of force

Answer 9

Fb=-Fa, equal and opposite forces

Question 10

weight equation ( based on gravity)

Answer 10

W (Fg)=mg

Question 11

law of gravity equation

Answer 11

F= Gm1m2/ r^2

Question 12

for an object resting on a perpendicular plane, which direction do the Normal force (N), Weight (Fg) and Friction force (F), and FgSin0 point ?

Answer 12

Normal Force (N) points upwards from the object, the Fg points downwards from the object ( opposite the normal force), and the friction force (F) points the opposite direction of the objects motion, opposite of FgSin0

Question 13

Momentum equation

Answer 13

M=mv

Question 14

Impulse equation

Answer 14

I=Force x change in time

Question 15

Torque equation

Answer 15

T=rFSin0

Question 16

what is conserved in an elastic collision

Answer 16

momentum and Ke

Question 17

what is conserved in an inelastic collision

Answer 17

only momentum

Question 18

Collision formula (m,v,f)- conservation of momentum

Answer 18

M1V1i+M2V2i= M1V1f + M2V2f