Topic 1 - Vectors + Kinematics Flashcards
What is meant by the term scalar quantity?
Quantities that have magnitude (size) but no direction are called SCALARS.
What is meant by the term vector quantity?
VECTORS have both direction and magnitude.
Give 3 examples of scalar quantities
- Mass
- Speed
- Time
Give 3 examples of vector quantities
- Weight
- Velocity
- Momentum
What does the gradient of a displacement time graph represent?
Velocity
What does the gradient of a velocity time graph represent?
Acceleration
What does the area under a velocity time graph represent?
Displacement
Explain what is meant by the term “terminal velocity”
Refers to when an object (typically a skydiver) is in a state of equilibrium where the weight and air resistance cancel out
How can acceleration be identified on a displacement-time graph?
By a curved line shape
What does a negative area under a velocity-time graph indicate?
Displacement in the opposite direction
What remains constant in a projectile’s motion?
Horizontal velocity
What is the equation for stopping distance
= thinking distance + braking distance
3 factors the influence thinking distance
- tiredness
- Alochol and drugs
- Speed
Factors influencing braking distance
- brakes
- ice
- speed
Define what is meant by stopping distance
Refers to the distance travelled from spotting a hazard to stationary
