Linear Kinematics Motion With Constant Acceleration Flashcards
What are the two types of quantities in linear kinematics?
Vector quantities and Scalar quantities
Vector quantities have both magnitude and direction. Scalar quantities have only magnitude.
What is the difference between distance and displacement?
Distance is the total path length traveled. Displacement is the shortest straight-line distance from the starting point to the endpoint.
Displacement considers direction, while distance does not.
Fill in the blank: Speed is a _______ quantity, while velocity is a _______ quantity.
scalar; vector
Speed has no direction, only magnitude, whereas velocity includes both.
What is the formula for velocity?
v = Δs/Δt
Where v is velocity, Δs is displacement, and Δt is time.
What are the units of measurement for velocity and speed?
m/sec
This is the standard unit for measuring speed and velocity in physics.
Who holds the men’s world record for 60m sprint and what is the time?
Chris Coleman; 6.34 sec
This record is used to compare average speeds with women’s records.
What was Usain Bolt’s time for the 100m and 200m sprints?
100m WR: 9.58 sec; 200m WR: 19.19 sec
These times are used to calculate average speeds for both distances.
What is the average velocity formula?
Average velocity = (x2 - x1)/(t2 - t1)
This formula calculates average velocity over a distance.
Fill in the blank: Acceleration is a change in _______ over a given period of time.
velocity
Acceleration indicates how quickly velocity changes.
What is the formula for acceleration?
a = (v - u)/t
Where a is acceleration, v is final velocity, u is initial velocity, and t is time.
What is the acceleration due to gravity?
9.81 m/sec²
This value is used in calculations involving free-fall motion.
What are the kinematics equations for uniformly accelerated motion?
s = ut + at²/2; v² = u² + 2as; v = u + at
These equations help calculate motion parameters under constant acceleration.
What does a negative velocity indicate?
An object is moving in the opposite direction
Negative values in motion imply a reversal from the defined positive direction.
What does a zero gradient in a velocity graph indicate?
Velocity is constant
A zero gradient means there is no change in velocity over time.
What is the significance of turning points in velocity graphs?
They indicate points of zero acceleration
Turning points occur where the slope of the velocity graph changes.
What happens to velocity when the displacement gradient is negative?
Velocity is negative
This means the object is moving in the opposite direction.
