SP1 Flashcards
What are vector quantities?
Vector quantities are quantities that have both size and direction
Name 3 examples or vector quantities
Displacement
Acceleration
Momentum
Acceleration
What are scalar quantities?
Quantities that only have a magnitude and do not have a direction
Name 3 scalar quantities
Mass
Speed
Energy
What is the formula that calculates speed, distance and time?
Speed= distance/time taken
Distance= speed x time
Time= distance/speed
What do horizontal lines represent on a distance time graph?
Horizontal lines mean the object is stationary
What do straight sloping lines represent?
Object is travelling at a constant speed
The steeper the line=the fast the object is travelling
How do you calculate acceleration?
Acceleration (m/s2)=Change in velocity(m/s)/time taken(s)
What is the equation that relates initial velocity, final velocity and distance?
(Final velocity)2 - (initial velocity)2 = 2 x acceleration x distance
What do horizontal lines show on a velocity/time graph?
Object is travelling at a constant velocity
What do sloping lines represent on a velocity/time graph?
Object is accelerating and the steeper the line, the greater the acceleration
If the line slopes downward, the object is decelerating
If the object is moving in the opposite direction, how is this shown on the graph?
The line would go below the x axis (negative velocity)
How is the distance calculated off a velocity/time graph?
The area under a velocity/time graph is the distance the object has travelled
