Physics on the go Mechanics Section 1

This covers Equations of motion, Graphs, Scalar and Vector quantities and Projectiles

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  • Created by: Edward
  • Created on: 28-12-12 10:55
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  • Mechanics Section 1
    • Scalar
      • A quantity that only requires magnitude, no direction
      • Examples include mass, temperature, time
    • Vector
      • A quantity that requires both direction and magnitude
      • Examples include acceleration, force, velocity
      • Use pythagoras to find resultant force
      • Find angle  of the force using either sin or cos
        • Inside angle is cos, outside is sin
    • Equations of motion
      • SUVAT
        • V=final velocity (ms^-1)
        • U=initial velocity (ms^-1)
        • A=acceleration (ms^-2)
        • S=displacement (m)
        • T=time (s)
      • V^2=U^2+2AS
      • S=0.5(V+U)T
      • A=(V-U)/T
      • S=UT+0.5AT^2
    • Projectile motion
      • At an angle
        • Resole horizontally and vertically, use the vertical component to find time and height, use the horizontal component to find out the distance travelled whilst in the air
      • Vertical
        • Use equations of motion
          • Horizontal
          • At an angle
            • Resole horizontally and vertically, use the vertical component to find time and height, use the horizontal component to find out the distance travelled whilst in the air
      • Horizontal
    • Free fall
      • The motion of an object undergoing the acceleration of gravity
        • Gravity=9.81ms^-2
    • Displacement-Time graphs
      • Gradient gives velocity
      • If graphs is curved it means object is accelerating/ decelerating
        • To find velocity draw a tangent
      • If linear, velocity is constant
      • Using ICT to draw graphs
        • Data is more accurate
        • Data displayed in real time
        • Higher sampling rate than human
    • Velocity-Time graphs
      • Gradient gives the acceleration
      • Distance travelled equals area
      • Using ICT to draw graphs
        • Data is more accurate
        • Data displayed in real time
        • Higher sampling rate than human

Comments

Rouf2007

I will be happy if anyone helps me to get answer book of Edexcel AS Physics Student Book byMiles Hudson and Mr Patrick Fullick.

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