NEWTON’S 2ND LAW OF MOTION

ACCELERATION= CHANGE IN VELOCITY/ TIME

A body undergoes acceleration when there is a change in its state of motion

ACCELERATION PRACTICE PROBLEMS1. In .5 seconds a projectile goes from 0-

300m/s. What is the acceleration of the projectile?

2. The space shuttle releases a telescope into orbit around the earth. The telescope goes from being stationary to traveling at a speed of 1700 m/s in 25 seconds. What is the acceleration of the satellite?

ACCELERATION KEY1. 600 m/s2

2. 1700/ 25 = 68 m/s2

GRAPHING VELOCITY

Velocity vs. Time Graphs

GRAPHING ACCELERATION

At Rest

GRAPHING ACCELERATION

Constant Velocity

GRAPHING VELOCITY

Acceleration= Increasing Velocity

GRAPHING ACCELERATION

Negative Acceleration= Decreasing Velocity

FORCE CAUSES ACCELERATION

Acceleration is directly proportional to net

(or unbalanced) force.

FORCE AND ACCELERATION LAB

How do mass and force affect the acceleration of an object?

DIRECTLY PROPORTIONAL MEANS:

As one thing gets bigger so does the

other!

MASS IS:The amount of matter in an object

The measure of the inertia (laziness) of an object

MASS IS NOT:Volume: how much space it takes up

Weight: a measure of the force of gravity

NEWTON’S 2ND LAW OF MOTION

F = force

m = mass

a = acceleration

SI Units of Newtons (N)

SI Units of Kilograms (kg)

SI Units of m/s2

F=ma

MYTHBUSTERS:

KILLER KLEENEX BOX

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WATER BALLOON EXAMPLE

Force and Acceleration Interactions

CAR CRASH EXAMPLE

Force and Acceleration Interactions