Velocity and acceleration
the last speed and direction of the trip you are measuring
Final velocity
3 different types of friction
Static friction, Kinetic(or sliding) friction, Rolling friction
All objects have a ______________ on all other objects
gravitational pull
What is momentum
Momentum is a fundamental concept in physics
velocity changes continuously at the same rate
constant acceleration
Differences between the 3 types of friction
Static: Acts between two stationary surfaces. Its the strongest
Kinetic: Occurs between sliding surfaces. Its generally weaker than static
Rolling: Arises when and object rolls over a surface. Its the weakest out of the other 2
2 ways mass and weight are related (the relationship between the two)
Both are scientific measurements and both are properties of matter
What is the relationship between momentum and force
Using Newton's second law, it states that the net force acting on an object is equal to the rate of change of its momentum
Can you have constant speed with a change in velocity?
Yes you can! Because you can keep the same speed and change direction
How does fluid friction differ from dry friction
Dry: Occurs when 2 solid surfaces contact
Fluid: Arises when a solid moves through a fluid
the planet you would weigh more on and why, jupiter or pluto
you would weigh more on jupiter because is has more gravity and mass so you would weigh more but your mass would stay the same.
How does momentum change in a collision
Momentum changes due to the forces exerted between colliding object
What is the difference between speed and velocity?
Speed has no direction only magnitude
Velocity has both magnitude and direction
How does friction affect motion
Friction is a force that opposes the motion of objects in contact
unit of measurement mass is measured in
grams
What are the different types of momentum
Linear momentum, Angular momentum, Relavtivistic momentum, Spin angular momentum
What is the difference between constant velocity, instantaneous velocity and average velocity?
Constant is not changing, instantaneous is in a given moment and average takes into account changes along the "trip"
What role does friction play in the functioning of brakes in vehicles
When the brake pedal is pressed the brake clamp against the rotors causing kinetic energy into heat,slowing down the car
Explain how an object's mass remain the same yet its weight can change.
Mass is the amount of matter in an object and weight is the pull of gravity on an object. Mass doesn't change with location but weight does change with location
Can momentum be negative, and what's does it indicate
Yes, momentum can be negative. Negative momentum is crucial in calculations