P5 - Forces
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What does a vector quantity have?
Magnitude and direction e.g acceleration, momentum, force, displacement and velocity
What quantity only has magnitude?
Scalar e.g speed, distance, time, temperauture
Give the 2 types of forces
• Contact 2. Non-contact
What is an interacting pair?
A pair of forces that are equal and opposite on 2 interacting objects (Newton’s 3rd law)
What is a gravitational force?
A force of attraction between masses, planets and stars create a strong gravitational force.
What does a strong gravitational force do to objects?
• Makes them fall to the ground 2. Gives them weight.
What is weight?
The force acting on an object due to gravity caused by the gravitational field.
When will the gravitational field strength be stronger?
Being closer to the mass causing the field The size of the mass causing the field.