Edexcel A-Level Physics: Mechanics
Unit 2 June 2024 Exam Questions and
Answers 100% Pass
SUVAT equations - Answer>>s = ut + 1/2at^2
s = (u+v)t/2
v = u + at
v^2 = u^2 + 2as
scalar vs vectors - Answer>>scalars only have size
vectors have size and direction, can add vectors to find their
resultant
examples of scalars - Answer>>mass
time
energy
temperature
length
speed
work done- workdone =FD 2 vectors mutiplied by each other
gives a scalar
examples of vectors - Answer>>displacement
force
velocity
acceleration
momentum
speed, displacement, velocity, acceleration definitions -
Answer>>speed= how fast something is travelling
displacement= how far objects travelled from starting point
, velocity= rate if change of an objects displacement( speed in
given direction)
acceleration= rate of change of objects velocity
free fall and equations that link it - Answer>>free fall= whens
there's only gravity acting and nothing else
gravitational field strength near earths surface is called g
=9.81Nkg^-1 g=F/m, this force is called weight
acceleration is related by F=ma
therefore for an object accelerating in free fall a=F/m=g
System in Equilibrium - Answer>>Resultant Force = 0
Kinetic Energy - Answer>>1/2mv^2
Gravitational Potential Energy - Answer>>mgh
Work Done - Answer>>Fd
Efficiency - Answer>>Useful Energy Output/Total Energy Input
x100 to get a %
Maximum Height - Answer>>s = (v^2-u^2)/2a
Range - Answer>>s = vt
projectile motion rules - Answer>>- think of horizontal and
vertical motion separately
- follow curved path because horizontal velocity remains constant
- vertical velocity is affected by acceleration due to gravity
how can you investigate projectile motion - Answer>>using
video camera, to plot course of an object
strobe photography
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