Chapter 11 Section 2 Force and Mass determine

Acceleration

Which wagon has more mass?

What will happen if you pull as hard as you can on each wagon (applying the same force to each one)?

Sketch this scenario in your notes. You can simplify it like this..

Draw arrows to represent applying the same force to each wagon

Add arrows that represent the different accelerations

Write newton’s second law next to your sketch . . . Newton’s Second Law: the acceleration of an object increases with increased force and decreases with increased mass

An object with less mass will accelerate more

An object will accelerate more if you apply more force

Newton’s Second Law is also called “The Law of Acceleration”

It can be summarized by this equation

This is why

F = ma

Complete Practice Questions 1-11

5. Photo caption on page 357. The NASA rocket accelerates with enough force to lift about 45 cars off the ground. As the rocket loses fuel, will it accelerate more or less? Why?It will accelerate more because mass becomes less

7.A baseball is three times more massive than a tennis ball. If the baseball and the tennis ball are accelerating equally, what can you determine about the force being

exerted on each? (hint: think of the equation for Force) the force on the baseball must be three times the force on the tennis ball. F=ma so 3 times the m means 3 times the F