F = ma

Question 1

What happens when an object is acted on by two unequal forces acting in opposite directions?

Answer 1

• Object accelerates in the direction of the larger force

* Resultant =, F1 - F2 = m x a

Question 2

What is the formula for the thrust of a rocket?

Answer 2

Rocket thrust, T = mg + ma 
g = gravity
m = mass
m x g = weight
rocket thrust must overcome the weight of the rocket for the rocket to take off

Question 3

What is the formula for the force of a rocket?

Answer 3

m x a = force

m x a = thrust - m x g