Forces
What is a force?
A push or a pull
What is position?
This is simply an object's location.
What is energy?
Any force requires this, as it is the ability to do work and can make an object move or change.
What is a collision?
In science, this occurs when two or more objects hit each other with a force. A car crash, a baseball bat hitting a ball, or your fingers typing on a keyboard are all examples.
What are the effects of forces on an object?
Forces can start an object moving, stop an object from moving, change the speed of an object, or change its direction.
What is motion?
When an object experiences a change in its position, we call this.
What are stored energy and energy of motion?
Scientists classify energy into these two main forms.
What is inertia?
This is the tendency of an object to stay in motion if it's moving, or stay at rest if it's still
When two forces act in equal and opposite directions, and create no motion, they are called this.
What are balanced forces
What is speed?
This tells us how fast an object's position changes over time.
What is potential energy?
This is energy that is stored inside an object and can be used later. One form is present when objects are above a surface, like a raised object or a stretched spring.
What is momentum?
Answer: This measurement tells us how easy or difficult it is to stop a moving object.
What are unbalanced forces?
If one force is greater than another, causing an object to change its motion, these are the type of forces acting on it.
What is how to calculate speed?
To find this, you need to divide the distance an object traveled by the time it took. For example, if a car travels 60 km in 4 hours, this would be 15 km/hr.
What is kinetic energy?
This is the energy an object has because it is moving. If you slow down, this energy decreases.
how do you calculate momentum?
To calculate this, you multiply an object's mass by its velocity.
What is gravity?
This noncontact force pulls all objects toward each other, like the Earth pulling you down or the Sun pulling the Earth around it.
What is velocity?
This term combines both an object's speed and its direction. An example is a plane flying 320 kilometers per hour south.
What are the two things kinetic energy depends on?
he energy an object has because it is moving (kinetic energy) depends on its speed and its mass. Objects with greater mass have more of this energy if traveling at the same speed.
This contact force is why a rolling ball on the grass will eventually slow down and stop, and why rubbing your hands together quickly can make them feel warm. The rougher the surfaces, the more of this force there is.
Friction