This is a participation grade - do it and get points. The quiz will be very much like this.
There are some questions on this review that are considered "test questions." While they are part of the concepts, they were barely mentioned and likely will not be on the quiz. I just want to see how we do on them.
Use the equations and examples below, as well as the calculator, to help you with all calculations you have to solve.
On the quiz, the equations will be provided, but not the examples.
Example:A car's velocity changes from 15 m/s to 25 m/s in 5 seconds.
Net Force - unopposing forcesNet Force (sum of forces) = F1 + F2…etc.
Net Force = Greater Force - Lesser Force
If a 10 N force is applied to the right and a 4 N force is applied to the left, the net force is:
Net Force = 10 N Right - 4 N Left = 6 N Right
If a 10 N force is applied to the right and 4 N force is also applied to the right, the net force is:
Net Force = 10 N Right + 4 N Right = 14 N Right
Force = mass x acceleration
Example:
If an object has a mass of 5 kg and an acceleration of 3 m/sec², the force can be calculated as follows:

What is acceleration?
If an object's velocity increases from 10 m/sec to 20 m/sec in 5 seconds, what is its acceleration?
Which of the following represents negative acceleration?
If a car accelerates at a rate of 3 m/sec² for 4 seconds, how much will its speed increase?
Which unit is used to measure acceleration?
What is a force?
Which of the following is an example of a contact force?
What is the formula to calculate force when acceleration and mass are known?
If a 5 N force acts right and a 3 N force acts left, what is the net force?
What is the net force on an object that is at rest?
In a tug of war, if one team pulls with a force of 600 N and the other with 500 N, what is the net force?
If an object is moving with constant velocity, what can be said about the net force acting on it?
What is friction?
Which type of friction occurs between two stationary objects?
What happens to frictional force as the weight of an object increases?
Which surface would produce the least amount of friction?
What is kinetic friction?
What is the primary cause of friction?
If an object is in free fall, what is the only force acting on it?
Which unit measures force?
A runner accelerates from rest to 5 m/sec in 10 seconds. What is their acceleration?
How much force is needed to accelerate a 4 kg object at 2 m/sec²?
Which of the following situations illustrates a net force of zero?
Which type of friction is usually the strongest?
If the mass of an object is doubled and the applied force remains the same, what happens to the acceleration?
An object sliding across a surface is stopped by friction. What type of energy conversion occurs?
What happens to the forces acting on an object in equilibrium?
If a skydiver opens their parachute, what happens to their acceleration?
A soccer ball rolls on the ground until it stops. What force is mainly responsible for this?
An object experiences a net force of 10 N to the right and a force of 5 N to the left. What is the net force?
If a box is pushed with a force of 30 N and moves at a constant speed, what can be said about friction?
What type of acceleration occurs if a car slows down as it goes up a hill?
If a child pushes a wagon, but it doesn’t move, what can be said about the forces acting on it?
An object at rest will remain at rest unless acted upon by:
Which of the following creates less friction?
What effect does lubrication generally have on friction?
If an object is moving to the right and a net force of 10 N is applied to the left, what will happen?
An object experiences a net force of 40 N to the right and a force of 30 N to the left. What is the net force?
A heavy rock is pulled by a force of 60 N, but it doesn’t move. What can we conclude?
What force opposes the motion of a car when it is in motion?
What happens to the speed of an object if the net force acting on it is zero?
If two dogs pull a sled with forces of 25 N and 35 N in the opposite direction, what is the net force?
Which of the following surfaces would create the most friction?