Equations

Question 1

What are all 4 equations for SUVAT?

Answer 1

1) s=1/2(u+v)t
2) s=ut+1/2at^2
3) v=u+at
4) v^2=u^2+2as

Question 2

What is the equation for VELOCITY?

Answer 2

velocity=dispalcement/time, v=s/t

Question 3

What is the equation for WEIGHT?

Answer 3

weight=mass*gravity, W=mg

Question 4

What are the equations for FORCE?

Answer 4

1) force=mass*acceleration, F=ma

2) force= change in momentum/time, F=(mv-mu)/time

Question 5

What is the equation for ACCELERATION?

Answer 5

acceleration=change in velocity/time taken, a=Δv/t

Question 6

What is the equation for IMPULSE?

Answer 6

impulse= force*time

Question 7

What is the equation for MOMENTUM?

Answer 7

momentum=mass*velocity, p=mv or p=mu

Question 8

What is the equation for MOMENT?

Answer 8

moment= force*distance, M=Fd

Question 9

What is the equation for WORK DONE?

Answer 9

work done= force*distance, W=Fd

Question 10

What is the equation for GRAVITATIONAL POTENTIAL ENERGY?

Answer 10

gravitational potential energy=massgravityheight. GPE=mgh

Question 11

What is the equation for KINETIC ENERGY?

Answer 11

kinetic energy=1/2mass*(velocity)^2

Ek=1/2mv^2

Question 12

What are the equations for POWER?

Answer 12

1) power=work done/time
P=Wd/t
2) power=driving force*fixed velocity
P=Fv

Question 13

What is the equation for EFFICIENCY?

Answer 13

efficiency=useful power/total power (*100)