Objects at rest remain at rest untilacted on by unbalanced forces. The apple is at rest GRAVITY makes it fall
The soccer ballremains at rest, until someone exerts thrust on it by kicking it.
Objects in motion remain inmotion with constant speed andin the same direction, until acted on by an unbalanced force.
INERTIA- An object’s resistanceto a change in its path of motionIN OTHER WORDS…INERTIA IS WHEN AN OBJECT DOES NOT WANT TO SPEED UP, SLOW DOWN, OR CHANGE DIRECTION!!!
When the bike hits the rock, it will stop. INERTIA says the boy will resist a changein motion and keep moving. He goes flying over the handle bars
The skateboarder is moving at aconstant speed and direction. He will eventually stop because of the force of friction acting on the wheels. FRICTION
•The car is in motion, until acted on by the wall. •The wall has more force than the car, so it will be stopped
The pitcherthrows a baseball in a certain pathway. The batter exerts a thrust on the ball with the bat, and the ball changes direction.
When the baseball is hit by the batter, it flies inthe air. INERTIA says that it will stay moving in the same path at the same speed. GRAVITY forces the ball to change it’s path.
This plane has a constant airspeed.•When a force •If a different force(THRUST) is acted (DRAG) is acted onon it, the airspeed it, the airspeed willwill increase, and decrease, and thethe plane will plane will slowaccelerate. down.