What happens when two objects have balanced forces?
When forces are balanced their motion doesn't change
100
What is gravity?
Gravity is a force of attraction between objects due to their mass.
100
What is the first step in the scientific method?
The first step in the scientific method is to create a problem.
200
What are the two types of energy?
Kinetic & Potential Energy
200
How is Average speed calculated?
Average speed can be measured with this formula: Distance/speed
200
What happens when an object produces a net force of 0 N is it balanced or unbalanced?
The force is balanced
200
What determines the force of gravity?
The strength of the force of gravity is determinded on the masses involved and distance between them.
200
What is a hypothesis?
A hypothesis is a prediction of what the result is going to be.
300
Describe the difference between Kinetic & potential Energy?
If an object is moving, it has kinetic energy. Potential energy is energy that is stored in an object and can be released under the right conditions. Therefore, the difference between potential and kinetic energy comes down to whether an object is moving or not.
300
What is the difference between speed and average speed?
The speed of an object is a measure of how far something moves in a given amount of time. Average speed is a way to calculate the speed of an object that may not always be moving at a constant speed.
300
What is a net force?
A net force is the combination of all the forces acting on an object
300
When is an object in free fall?
An object is in free fall when gravity is pulling an object down and no other forces are acting on it.
300
Should scientists put there procedures, observation, and results on paper? If so why?
They should put there procedures, observation, and results so people can redo the experiment.
400
The law of conservation states what?
It states that energy can not be created nor destroyed
400
Jake lives 100 m away from Nick. What is Jake's average speed if he reaches Nick's home in 50s?
Jake would go 2 m/s
400
There are two dogs pulling on a rope and one dogs pull with more forces then the other dog, will this cause motion and if so what kind of motion?
The unbalanced forces will produce a change in motion. this change in motion is acceleration.
400
Why is the weight of a person different on different planets but the mass is not?
The weight is different on different planets because other planets pull harder or not as hard as earth. A person will have the same mass every where it goes.
400
What does empirical evidence mean?
Empirical evidence is when you get evidence from observations.
500
What object would have the most potential energy on the top of a hill: a bike, a person, or a boat?
The boat would have more potential energy becuase it is heavier
500
How would decreasing the time it takes you skateboard a certain distance effect your speed?
When the time decreases the speed will also decrease.
500
State Newton's three laws?
1.) An object at rest remains at rest, and an object in motion maintains it's velocity unless it experiences an unbalanced force.
2.) The acceleration of an object depends on the mass of the object and the amount of force applied.
3.) Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first
500
Explain the difference between mass and weight?
Mass doesn't change in any planet but weight does.
500
What does science affect?
Science affects the way we think and the way we live our lives.