Physics end of year Flashcards
(16 cards)
What is meant by scaler quantity?
Scaler quantities only have a magnitude and not a direction
What is meant by vector quantity?
Vector quantities have a magnitude and the direction
What are the main scaler quantities?
Speed
Temperature
Distance
What Are the main vector quantities?
Velocity
Displacement
Weight
What is the calculation for weight?
Wait equals gravitational potential energy x mass
What is The equation for GPE?
GPE equals = mass height x Gravitational field strength
What is the equation of doom?
V2 - u2= 2xaxx
What is the equation for acceleration?
A= v-u/ t
What factors are needed to use the equation for acceleration?
Speed Time And starting speed
What is the equation for efficiency?
Efficiency= Useful energy Out / Useful energy in
What is the equation for kinetic energy?
KE=0.5xmxv2
What is the equation for speed?
Distance divided by time
What is the equation for velocity?
Displacement divided by time
how can we interpret distance time graphs?
A shallow aligns means less distance is travelled in more time. This means we are going slower.
A flat line means no distance is travelled in no matter of time this means we are stationary and not moving
A steep line means we are travelling more distance in less time so we are Going faster
How can we interpret displacement From velocity Time graphs?
The slope of a velocity time Graph represents the acceleration
The area underneath the velocity time graphs represent the displacement
The steep line the higher the acceleration
A horizontal line means the object is constant
