May CSET Flashcards
What is the definition of acceleration?
Acceleration is equal to the change in velocity divided by the change in time.
Formula: v = v0 + at
What is the displacement curve?
The displacement curve represents motion determined by acceleration, initial velocity, and time. It is used to calculate how far an object has traveled under constant acceleration.
Formula: x - x0 = v0t + 1/2 at^2
What is the formula to calculate displacement using acceleration?
x - x0 = v0t + 1/2 at^2
How do you calculate acceleration if initial velocity is 0, time is 7s, and final position is 122m?
Use the displacement equation:
x - x₀ = v₀t + (1/2)at²
Solve:
122 = (1/2) * a * (49)
a = (244/49) = 4.96 m/s²
Calculation: 122 = 1/2 a(49) leads to a = 244/49
What is one-dimensional motion?
Motion occurring along a single straight axis (either forward or backward) without any sideways or vertical movement.
It can be described by conditions like a car moving on a straight road.
What are the four conditions to describe one-dimensional motion?
- Staying still (zero velocity)
- Moving at a constant speed
- Speeding up (acceleration)
- Slowing down (deceleration)
What does delta (Δ) represent in kinematics?
Delta (Δ) represents a change.
What does a horizontal line represent on a position vs. time graph?
Staying still.
What does a diagonal straight line represent on a position vs. time graph?
Constant speed.
What does a curved upward slope indicate on a position vs. time graph?
Speed increasing.
What does a straight horizontal line represent on a velocity vs. time graph?
Constant velocity.
What does a straight horizontal line above zero represent on an acceleration vs. time graph?
Constant acceleration.
