gravity

Created by

ulala

Cards (20)

What is gravity defined as?
A force of attraction between two objects
What factors determine the size of the gravitational force?
The mass of the objects and their distance apart
Why is the gravitational force negligible for small objects like apples?
Because they have relatively low masses
How does distance affect gravitational force for large objects like Jupiter?
Distance reduces the gravitational force felt
What is the term for the area around an object where gravity is felt?
Gravitational field
What is the symbol for gravitational field strength?
The letter g
What is the gravitational field strength on Earth?
Approximately 9.8 newtons per kilo
What is the gravitational field strength on the Moon?
Approximately 1.6 newtons per kilo
What does an object experience when it enters a gravitational field?
A force of attraction, referred to as weight
How do you calculate an object's weight?
Mass multiplied by gravitational field strength
What is the weight of a person with a mass of 60 kilos on Earth?
588 newtons
How do we typically refer to mass in everyday language?
We say we weigh a certain number of kilos
What is the difference between mass and weight?
Mass is intrinsic; weight is a force
What is required to lift an object against gravity?
Energy or work
What is the formula for gravitational potential energy?
ep = mgh
What units are used for gravitational potential energy?
Joules
How do you convert grams to kilos?
Divide by 1000
What is the gravitational potential energy of a 100-gram apple thrown 3 meters up?
94 joules
What are the key takeaways about gravity, weight, and gravitational potential energy?
Gravity is a force of attraction between objects.
Weight equals mass times gravitational field strength (9.8 N/kg on Earth).
Gravitational potential energy (ep) equals mass times gravitational field strength times height (ep = mgh).
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