| Motion and motion graphs | Velocity and acceleration | Velocity and acceleration | Velocity, acceleration ag projectile motion | Velocity and acceleration |
|---|---|---|---|---|
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Kinematic
The study of motion without considering the forces that produce the motion.
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Tangent
A straight line that intersects a curve at a point and has the same slope as the curve at the point of intersection.
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Projectile
An object that is launched through the air along a parabolic trajectory and accelerates due to gravity.
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Explain how there can be average acceleration when there is no change in speed.
The displacement and the time using change, the acceleration also changes.
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A man walks toward the shop. The displacement of him is 15km [S60E]. Determine the components of the displacement.
7.5km [s]
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Scalar
The quantities that have only a magnitude but no direction.
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Instantaneous velocity
The velocity of an object at a particular instant; the slope of the tangent to a position-time graph.
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Range
The horizontal displacement of a projectile.
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Projectile motion
It is the motion of a projectile such that the horizontal component of the velocity is constant, and the vertical motion has a constant acceleration due to gravity
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Average speed
The total distance travelled divided by the total time to travel that distance.
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Vector
It has both a magnitude and a direction.
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Instantaneous speed
The speed of an object at particular instant; the magnitude of the slope of the tangent to a position-time graph.
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Frame of reference
A coordinate system relative to which motion is describe or observed.
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Free fall
The motion of a falling object where the obey force acting on the object is gravity
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A jogger takes 25.1s to run a total distance of 165m by running 140m [e] and then 25m [w]. The displacement is 115m[e]. What it the average velocity?
4.58m/s [e]
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Position
The straight-line distance and direction of an object from a reference point.
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Average acceleration
It is the change in velocity divided by the time interval of that change
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Relative velocity
The veocity of an object relative to a specific frame of reference.
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Scant
A straight line connecting two separate points on a curve
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Dynamics
It is the the study of the causes of motion.
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Displacement
It is the change in position of an object
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Instantaneous acceleration
The acceleration at a particular instant in time
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Component of a velocity
In two dimensions, either of the x-vector and y-vector that are combined into an overall vector.
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Average velocity
The displacement divided by the time interval for that changes the slope of a secant on a position-time graph.
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Average speed is the sum of all instantaneous speeds.
False
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