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Physics Unit 1

1.2: Kinematics ' Remember, for questions and examples check classwork book'

QuestionAnswer
What's displacement? The (straight line) distance a particle travels in a given direction
What's the symbol and unit for displacement? Symbol - X Unit - M
What's velocity? rate of change of displacement
What's the symbol, unit and equation for velocity? symbol - V Unit - M/S Equation - V = X/T
What's acceleration? rate of change of velocity
what's the symbol, Unit and equation for acceleration? Symbol - a Unit - MS*-2 Equation - A = change in velocity/ time
On a displacement-time graph, what value does the gradient give us? the value of velocity
On a displacement-time graph where the line travels upwards at 45 degree angle, displacement is directly proportional to___? Time
On a displacement-time graph where the line travels upwards at 45 degree angle, The body is moving in a U____ velocity? Uniform
On a displacement-time graph where the line travels upwards at 45 degree angle, The gradient gives us the ____ of the body velocity
On a displacement-time graph where the line travels horizontally uniformly, The gradient is ____ , therefore the velocity is also ____? Zero
On a displacement-time graph where the line travels horizontally uniformly, The body remains ____? Stationary
What does a negative gradient mean on a displacement-time graph? Negative velocity - reversing
On a velocity-time graph, where the line is about 45 degrees, the gradient is the ____? Acceleration
On a velocity-time graph, Where the line travels horizontally uniformly, the body is moving at a constant v___ / uniform v_____ velocity
2 rules for velocity time graphs : . The gradient of the graph represents a_____ . Area under the graph represents d_____ travelled Acceleration Displacement
What are the 4 equations for uniformly accelerated motion? EQ 1: v= u+at EQ2: x= 1/2 (u+v)t EQ3: x= ut+1/2 at*2 EQ4: v*2= u*2 + 2ax
What do the letters; u, v, t, a, and x stand for in uniformly accelerated motion equations? u - initial velocity v - final velocity t- time a - acceleration x - displacement
' If there is no air resistance, the body will fall with constant a_____' acceleration
When we factor gravity into an equation, how big is the number we use for gravity on earth at sea level? 9.81ms*-2
'When air resistance and weight are the same value on a body falling, the body reaches t____ v____' Terminal velocity
If an object weighs 500N, and the air resistance acting upon it is 200N, how big is the unbalanced force? 300N
'In projectile motion, The horizontal and vertical motions of a ball can be treated s_____' seperately
Created by: william0709
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