Physics: Kinematics

Description

Kinematics! :)
Meldy Miyashita
Mind Map by Meldy Miyashita, updated more than 1 year ago
Meldy Miyashita
Created by Meldy Miyashita almost 8 years ago
1400
5

Resource summary

Physics: Kinematics
  1. Definition of terms
    1. Distance: a physical unit that describes how far an object is or describes the length an object has covered during its motion. (scalar quantity)
      1. Displacement: the distance travelled along a specified direction. (vector quantity)
        1. Speed: the distance moved per unit of time taken. (scalar quantity)
          1. Average speed: total distance / total time taken
          2. Velocity: the rate of change of displacement (vector quantity)
            1. Average velocity: total displacement moved / total time taken
            2. Acceleration: rate of change of velocity (vector quantity)
              1. An object that has an equal increase in velocity per unit of time has constant/uniform acceleration.
            3. A scalar quantity only has magnitude
              1. A vector quantity has magnitude and direction.
                1. Kinematics equations
                  1. are used in situations in which the object has uniform acceleration and is travelling in a straight line. (one-dimensional motion/ rectilinear motion)
                    1. v = u + at
                      1. s = 1/2(v+u)t
                        1. s = ut + 1/2at^t
                          1. s = vt - 1/2at^2
                            1. v^2 = u^2 + 2as
                              1. where: v=final velocity, u=initial velocity, s=displacement, a=acceleration, t=time
                              2. Projectile motion (two-dimensional motion)
                                1. for displacement calculation, use the kinematic equation--s = ut + 1/2at^2
                                  1. x-axis displacement: s = ut (no acceleration in horizontal motion)
                                    1. y-axis displacement: s = 1/2gt^2
                                    2. for velocity calculation, use the kinematic equation--v = u + at
                                      1. x-axis velocity: v = u
                                        1. y-axis velocity: v = gt
                                          1. At maximum height, the velocity of the y-axis is 0.
                                        2. for resultant velocity, use the Pythagoras Theorem
                                          1. to find the angle of resultant velocity (between the horizontal velocity and resultant forces), use trigonometry (tan__(tither) = Vy/Vx
                                        Show full summary Hide full summary

                                        Similar

                                        GCSE AQA Physics - Unit 3
                                        James Jolliffe
                                        GCSE AQA Physics 1 Energy & Efficiency
                                        Lilac Potato
                                        AQA Physics P1 Quiz
                                        Bella Statham
                                        P2 Radioactivity and Stars
                                        dfreeman
                                        Using GoConqr to study science
                                        Sarah Egan
                                        Junior Cert Physics formulas
                                        Sarah Egan
                                        Physics 1A - Energy
                                        Zaki Rizvi
                                        Physics: Energy resources and energy transfer
                                        katgads
                                        P2a revision (part 1)
                                        juliasutton
                                        P2a (part 2)
                                        juliasutton
                                        Units of measurement - physics
                                        Sarah Egan