Slides in this set
average velocity = displacement/time (v=s/t)
acceleration = change in velocity/time (a=v-u/t)
force = mass × acceleration (F = m × a)
momentum = mass × velocity (p = m × v)
gravitational potential energy = mass × gravitational field
strength × change in height (PE = m × g × h)
kinetic energy = ½ × mass × (velocity)2 (KE = ½ × m × v2)
electrical energy = voltage × current × time (E = V × I × t)
power = work done/time taken (P=W/t)
work done = force × distance moved in the direction of the
force (W = F × s)…read more
Acceleration a measure of how quickly the velocity of an
object is changing. It can be positive (speeding up) or
negative (slowing down).
Action in physics, one of a pair of forces. The reaction force
acts in the opposite direction.
Gradient a measurement of the steepness of the slope of a
graph. The steeper the graph, the higher the gradient.
Magnitude a measure of how big something is.
Momentum a quantity describing the movement of an
Reaction in physics, one of a pair of forces. This acts in the
opposite direction to the action force.…read more
Resistance in physics, a force that acts in the opposite direction of
motion, e.g. Friction.
Resultant force the total force that results from 2 or more forces acting
on a single object. It is found by adding the forces together, taking into
account their direction.
Speed a measure of the distance an object travels in a given time,
Stopping distance the distance a car travels between when the driver
sees something and when the car stops.
Terminal velocity a constant, maximum velocity reached by falling
objects. This happens when the weight downwards is equal to the air
Vector a quantity which has a size and a direction.
Velocity the speed of an object in a particular direction.
Weight the force pulling an object downwards. It depends upon the
mass of the object and the strength of gravity.…read more
- Gradient = acceleration
- Flat sections represent a constant speed
- The steeper the gradient the greater the
- The area under a section of the graph is the distance
travelled in that time
- A curve means an acceleration which is constantly changing
Using the graph
- Acceleration = gradient = vertical change
- Velocity is read off the value from the velocity axis
- Distance travelled in any time interval is equal to the area
under the graph…read more