Chapters 2.1 and 2.2 Flashcards
Displacement-time graph.
What does the Slope and nature of the line suggest?
The slope gradient indicates the velocity.
Straight lines imply constant velocity.
Velocity-time graph
What does the slope, nature of the line and area suggest?
The slope gradient indicates the acceleration.
Straight slanted lines imply constant acceleration or deceleration.
The area under the lines indicates the change in displacement.
Acceleration-time graph
What does the nature of the line and area suggest?
Horizontal lines imply constant acceleration.
The area under the lines indicates the change in velocity.
What are the 4 SUVAT equations?
Why does a car have a maximum speed?
Because eventually the force of air resistance and friction will be more than the force of the engine.
What is terminal velocity?
The specific velocity at which you stop accelerating during a free-fall is called the terminal velocity.
Determining the resultant force
- Resolve all acting forces into horizontal and vertical components
- Add up the horizontal components
- Add up the vertical components
- Combine the sum of horizontal components and the sum of vertical components
What is a Translational equilibrium
Net force = 0
Newton’s First Law
(Law of Inertia) states that a body remains at rest or travels with constant speed along a straight line unless acted upon by an external force. (Net force = 0)
Newton’s Second Law
states that net force is directly proportional to acceleration and to mass. (F=ma)
Newton’s Third Law
states that if a body A exerts a force on body B, then body B exerts a force of the same magnitude but in the opposite direction of body A.
What is static friction
Static friction is that which stops objects from beginning to move
What is kinetic friction
Kinetic friction is that which slows objects down when they are moving
Which is bigger Static or Kinematic friction
Static
How to calculate friction
