6.1, 7.1-7.8 - Vectors and scalars, Motion Flashcards
What is displacement?
The distance of an object from a point in a specific direction.
Is displacement a vector or a scalar?
Vector
What is velocity?
The rate of change of displacement.
Is velocity a vector or a scalar?
A Vector
What is speed?
The change in distance travelled per unit time.
Is speed a vector or a scalar?
Scalar
What is acceleration?
Rate of change of velocity
what are the units of acceleration?
ms-2
What is meant by constant velocity?
Speed and direction of motion don’t change
What is represented by the gradient of a distance time graph?
Speed
What is represented by the gradient of a displacement time graph?
velocity
What is represented by the gradient of a velocity time graph?
Acceleration
What is represented by the area under a velocity time graph?
Change in displacement
What is represented by the area under an acceleration time graph?
Change in velocity
When can SUVAT be used?
Constant acceleration, motion along a straight line
WHat is the effect of mass on the acceleration for an object in free fall?
None
What is the relationship between displacement and time for an object falling freely from rest?
displacement is proportional to time squared
What is a projectile?
An object acted upon only by the force of gravity
What shape is the path of a projectile?
Parabolic
What is the initial velocity of an object that is projected horizontally?
0
What is the angle of projection that results in maximum range?
45 degrees
Ignoring air resistance, what is the acceleration of a projectile?
G downwards
How does horizontal velocity vary in a projectile motion?
It is constant
What aspect links the vertical and horizontal motion of a projectile?
Time
What is the vertical velocity at the peak of projectile motion?
0
