Acceleration -Ai Vy

Acceleration is change in velocity over time, referring to when we speed up or move at a faster and faster rate. In the video, Karlee runs from the left to right, at first at a pretty fast pace, but slows down over time. In the other hand, Meena runs from the left to the right, slowly at first and after they high five, Meena speeds up. Meena shows how a runner accelerates. In addition, we can see a lot more examples in our real life. For example, when a car turns from a normal street to free way, it speeds up in a significant way. When the velocity of a car becomes faster, it demonstrates acceleration.
-Ai Vy

670 × 503 - bristol.k12.ct.us

Newton's Second Law - Hitting Tennis Balls Against the Fence -Karlee

Newton’s second law is based on the equation f=ma, where f is the force, m is the mass, and a is the acceleration. This means that force is equal to the product of mass and acceleration. Since changing the mass isn’t possible, changing the acceleration is the key force. The smaller the mass, the more it is allowed to accelerate quickly, and the larger the mass the smaller the acceleration. For example, if you have a motorcycle racing a plane, the motorcycle will accelerate at a faster rate than the plane, giving a big head start, however, once it has been a while the plane will have sped up and have more velocity than the motorcycle because of the build up to its terminal velocity. When we were hitting the tennis ball against the fence, using the racket to do so, made it speed up. The tennis ball’s mass didn’t change throughout the energy transfers. Since the ball had so much acceleration, it hit the fence and sprung back. Meaning that force is measured by both mass and acceleration, as shown with the tennis ball.
 -Karlee