You are riding in a car with a seat belt on. Suddenly, the car stops and you get thrown forward. Why?
Because inertia wants you to keep moving, so you keep on moving forward, but then stop because of your seat belt holding you back.
100
What is motion?
An object changing position relative to the resting point
200
What is gravity?
The force of attraction between two objects
200
How do you calculate the the force acting on an object?
Mass * Acceleration
200
Who made the Laws of Motion?
Sir Isaac Newton
200
Maria has a piece of paper and a rock. She lets go of them at the same time, at the same height. Which object will reach the ground first?
rock
200
How does an object go in motion?
When it gets acted upon by an unbalanced force
300
Objects with more mass have more/less inertia.
More
300
What is force measured in?
Newtons
300
An object at rest will _________________________. An object in motion will___________________________ unless action upon by a(n)__________________________.
Stay at rest, stay in motion, unbalanced force
300
You push a toy car down sand paper and a toy car down wax paper. On which material will the car go further on and why?
Car going down wax paper because wax paper has less friction
300
What is velocity?
The rate or speed at which an object travels in a given direction
Name the three Laws of Motion and what they state.
1. First Law: An object at rest will stay at rest and an object in motion will stay in motion unless acted upon by an unbalanced force.
2. Second Law: Acceleration of an object depends upon its mass and the force applied to it.
3. Forces act in pairs. For every action, there is an equal and opposite reaction.
400
You are in space, and you have a soccer ball. You kick it. What will the ball do and why?
Keep traveling forever because of inertia and there is no force acting against it.
400
How do you find the speed of an object?
Distance/Time
500
How do you find the momentum of an object?
Mass * Velocity
500
What is net force?
The total amount of forces acting on an object to change its motion or direction
500
Were the Laws of Motion published in the 1500s, the 1600s, or the 1800s?
1600s
500
How come the car stops when you put on the brakes?