Forces Study Guide What does Newton’s first law say?
Give an example of the first law.
What does Newton’s second law say?
Give an example of the second law.
What does Newton’s third law say?
Give an example of the third law.
An object with a mass of 48kg accelerates as 4 m/s/s. What force is required to make this happen? (HINT: F = ma)
What are the four types of friction? Give an example and definition of each. Use this website link to help you answer this question: 4 Types of Fricton
If force goes up, what happens to acceleration?
If mass increases, what happens to acceleration?
Unbalanced forces cause an object to
Balanced forces cause an object to or .
Draw 4 different force diagrams where the forces are unbalanced.
Give a real life example for each
Draw 3 different force diagrams where the forces are balanced.
Give a real life example for each
A ball rolls across the floor at a constant speed, what will happen to it if there is no friction? Why?
How does the scenario above change if there is friction? Explain.
How do you measure, or calculate (include units on each of these)
Weight
Inertia
force
What is a net force and how do you find it?

Gravity:
Define gravity
What affects gravity?
Is there gravity in space?
How are mass and weight different?
If you travel to Pluto what happens to your mass and weight?
I have a weight of 80N, what is my mass?
A ball is dropped from the top of a building’s roof. What is the acceleration of the ball?
Explain how satellites and orbits work.

The motion of a ball falling down through the atmosphere, or a model rocket being launched up into the atmosphere are both examples of Newton's first law. The motion of a kite when the wind changes can also be described by the first law.

Newton's Second Law of Motion says that acceleration (gaining speed) happens when a force acts on a mass (object). Riding your bicycle is a good example of this law of motion at work. Your bicycle is the mass. Your leg muscles pushing pushing on the pedals of your bicycle is the force.

Other examples of Newton's third law are easy to find. As a professor paces in front of a whiteboard, she exerts a force backward on the floor. The floor exerts a reaction force forward on the professor that causes her to accelerate forward.

It is summarized by the equation: Force (N) = mass (kg) × acceleration (m/s²). Thus, an object of constant mass accelerates in proportion to the force applied.

Friction is the force that opposes motion between any surfaces that are in contact. There are four types of friction: static, sliding, rolling, and fluid friction.

Static, sliding, and rolling friction occur between solid surfaces. ...

Fluid friction occurs in fluids, which are liquids or gases.

increase the force on an object the acceleration increases proportionally. Since the mass does not change as the acceleration increases, we can say that force is equal to acceleration. Therefore, if you double the force you double the acceleration.

If you increase the mass at a given force the rate of acceleration slows. Therefore, mass is inversely proportional to acceleration.

The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel each other out.

Newton's law also states that the strength of gravity between any two objects depends on two factors: the masses of the objects and the distance between them. Objects with greater mass have a stronger force of gravity between them. ... Objects that are closer together have a stronger force of gravity between them.

Some people think that there is no gravity in space. In fact, a small amount of gravity can be found everywhere in space. Gravity is what holds the moon in orbit around Earth. ... It is possible for a spacecraft to go far enough from Earth that a person inside would feel very little gravity.

The mass is essentially "how much stuff" is in an object. ... Weight: There is a gravitational interaction between objects that have mass. If you consider an object interacting with the Earth, this force is called the weight. The unit for weight is the Newton (same as for any other force).

You can enter your weight in any unit you wish

If you are talking about these objects on Earth, then the gravitational acceleration is around 9.81 m/s2 . We know that weight is given by the formula, W=mg , where m is the mass of the object in kilograms, and g is the gravitational acceleration.

Satellites are able to orbit around the planet because they are locked into speeds that are fast enough to defeat the downward pull of gravity. ... A satellite maintains its orbit by balancing two factors: its velocity (the speed it takes to travel in a straight line) and the gravitational pull that Earth has on it.