Warm Up 8/24 What is SI Unit Grams measure _________________. Liters measure _________________. Meters measure _________________.

Beginning Science Knowledge

Metric System Kilo1000x10 3 Hecto100x10 2 Deca10x10 Base1 deci.10x10 -1 centi.01x10 -2 mili.001 x10 -3 Meters Liters Grams

KHDBdcm

Math Time What is an exponent? 10x10= 10 ^ 2= 10 x 10 x 10= 10 ^ 3 = 10 x 10 x 10 x 10 = 10 ^ 4 =

Scientific Notation Another way of writing a large number or very small number 1,000,000= 1 x 10^ x 10^-3= = 9.83 x 10^ = 2.93 x 10^-27

Warm Up 8/25 Define Speed Define Force Define Mass

Speed, Force, Mass 8.P.2A.1- Plan and conduct controlled scientific investigations to test how varying the amount of force or mass of an object affects the motion (speed and direction), shape, or orientation of an object

Speed/Mass/Force Defined Speed- Rate at which an object moves over a certain distance over a certain time Miles/Hour Meters/Second Mass- Size of an object Kilograms Grams Force- Strength or Power exerted upon an object Newtons

Mass A massive object is in motion, more force must be applied to accelerate more quickly 5000 Kg car is moving at 10 m/s from 1000N of force, apply another 1000N its going to go faster 1 Kg ball is rolling at 2 ft/s with 10 N of Force, apply 2 more N it will go faster Same Force applied to 2 objects, the object with smaller mass will accelerate more quickly 10 Kg Block and 1 Kg Block, Apply 10 lbs of Force to both blocks, 1 Kg will accelerate more quickly Baseball and bowling ball are thrown with the same about of Force, the baseball will speed up faster To Slow Down or stop a more massive object, the force must be greater on than a less massive object to stop If the same braking force is applied to a small car and a large truck, the car will slow down more quickly It is more difficult to change the direction of a heavy moving object, than one that is lighter in mass Semi Truck, Go Cart

Speed Measure of how fast something moves a particular distance Rate of Change of the position of an object How far something will move in a given period of time Velocity- Vector (Dispicable Me) Speed doesn’t equal fast movement Ricky Bobby Acceleration is the rate an object changes speed Car accelerator

Force If an object is in motion, and more force is applied, the faster it goes Acceleration (change in speed) 2 objects have the same mass and a greater force is applied to one of the objects, that object rwill change speed more quickly If an object must be slowed down quickly, The force applied to that object must be greater than what is need for a gradual slowing down Greater the force applied to the brakes of a car, more quicky it will slow down or stop Varying the amount of force applied to a moving object can also change the direction that the object is moving more or less quickly Baseball is pitched toward a batter may quickly change direction and speed if hit very hard, or may change direction and speed more slowly if hit softly as with a bunt

Applying Knowledge What is the rate of change, of a position of an object over a given period of time? What is the size of an object? What is the Scientific Notation for ? What does a Newton measure?

Warm Up 8/26 Write in Scientific Notation x x 10 9

1.Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it. 1.Law of Inertia 2.The relationship between an object’s mass, its acceleration, and the applied force is Force equals mass times acceleration. 1.F=ma 3.For every action there is an equal and opposite reaction

A car with a mass of 1500g is accelerating at a rate of 20 m/s 2,what is the Force? A baseball is thrown with a force of 100 Newtons with an acceleration of 5 m/s 2, What is the mass? A football player with a mas of 300kg starts running with a force of 300 Newtons. What is his acceleration?

Force Change in shape depends on magnitude of the force that is acting on it Car Crash Mass Change in shape depends on the mass of object colliding with the object Heavy Truck colliding with a tiny car Shape

Orientation Refers to relative position of an object Force Force can cause an object’s orientation to change Faster rate collision will cause more change than not Mass Change in orientation can occur when a heavier object collides with a lighter object Heavy objects collides with lighter objects, lighter car will have more noticeable change

Warm Up 8/27 What are Newton’s Three Laws? What is Speed?