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These are the force diagrams for a cup and a table if the cup was sitting on top of the table.

Forces

The GIF below demonstrates the 3 collisions.

This force diagram shows the forces acting on the receiver, a toy car, as it is pushed forward.

-Vehicle Colision-when the vehicle hits something (another car, a wall, post, etc) Human Colision-when the human hits the inside of the car Internal Colision-when the person's internal organs hit the outside of their body

There are many different types of forces that act upon objects.

• applied
• air/water reistance
• tension

• elastic
• normal
• friction
• bouyant

• gravity

Because the net force is 0, the car is being pushed at a constant rate. If the forces were unbalanced, the object would experience acceleration.

In this case, the paired forces are the Fa of the cup on the table and the Fn on the cup from the table.]

If a ball was rolling counter clockwise inside a cup, at which point should the cup be lifted for the ball to hit the dot?

Vocab (click on words)

This is an example of an inelastic collision.

acceleration

The correct answer would be B. The reasoning for this is all because of Newton's 1st law. It states that an object

velocity

Newton's Laws

momentum

First Law Newton's first law states that an object at rest or moving in a constant velocity will continue to be in that state of motion unless acted upon by an unbalanced force. This connects to a car crash because when the car hit something, the human still wants to move forward, causing the person to get pushed out of their seat. Second Law Newton's second law describes the relationship betwen force, mass, and acceleration. It states that Force=mass x aceleration. This can relate to the car crash challenge. We calculated the mass of our cars and the speed. If we calculated acceleration, we would be able to figure out the amoount of force acting on the car. Third Law Newton's third law mentions paired forces and how every action has an equal and opposite reaction. In the car crash challege, the paired forces could be the Fn from the track and the Fa from the car.

Momentum

video

momentum=mass times velocity. The higher either of those are, the higher the momentum will be.

moving at a constant velocity will remain moving in a straight line unless acted upon by another force. If the cup is lifted at point B, the ball will move in a straight line and hit the dot.

Before a canon is fired, it has 0 momentum because all objects are at rest. After the canon is fired, the canonball has positive momentum and the canon itself has negative momentum because of recoil. This shows the law of conservation of momentum because the momentum before is equal to the momentum after.

This GIF demonstrates 2nd law because the person applies the same amount of force to both people, but the lighter one experienced more acceleration.

• elastic colision-where two objects collide and bounce off eachother in opposite directions
• inelastic collisions-when two objects collide and both objects move together.

more mass+constant force=less acceleration more force+constant mass=more acceleration