Speed, Acceleration, and Equations of Motion in Physics
Explore the concepts of speed, acceleration, and equations of motion in physics through practical examples and mathematical skills. Learn how to define speed, rearrange equations, obtain acceleration from velocity-time graphs, and calculate acceleration using the relevant equation.
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Presentation Transcript
L1 Speed L2 Distance-time graphs L3 Speed practical L4 Acceleration L5 Velocity time graphs L6 Equation of motion Lesson Sequence Pupils should have been taught to: Pupils will be taught: The definition of speed & mathematical skills in (for example) rearranging of an equation. How to obtain acceleration from a velocity time graph. Future Learning Specification Prior Learning
SciDoc Acceleration Acceleration 19/04/2025 Last Lesson Last Term Last Year Stretch & Challenge I do We do You do Test I do We do You do Do Now
SciDoc Acceleration Acceleration Keywords Learning Objectives Keywords Acceleration Speed Velocity Time Recall the definition of acceleration. Recall the equation for acceleration Calculate acceleration using the equation. I do We do You do Test I do We do You do Do Now
SciDoc Acceleration Acceleration Acceleration is a measure of how much the velocity changes by in a given time. Stretch: What are the units of velocity and time? I do We do You do Test I do We do You do LO:
SciDoc Equation for acceleration Equation for acceleration Stretch: Rearrange the equation to give equations for v and t. Acceleration = Change in velocity Time taken a = v t Acceleration has units of m/s2 Change in velocity has units of m/s Time has units of seconds I do We do You do Test I do We do You do LO:
SciDoc Practice question Practice question Usain Bolt accelerates from a speed of 5 m/s to 10 m/s in a time of 0.8 seconds. Calculate his acceleration. Write down the teacher s notes on the whiteboard. I do We do You do Test I do We do You do LO:
SciDoc Worksheet Worksheet Complete the worksheet I do We do You do Test I do We do You do LO:
SciDoc Basic answers Basic answers 2 m/s2 5 m/s2 4 m/s2 4 m/s2 20 m/s2 2 m/s2 20 m/s2 20 m/s2 7 m/s2 6.5 m/s2 2 m/s2 I do We do You do Test I do We do You do LO:
SciDoc Medium answers Medium answers 2.7 m/s2 lower 15 m/s 7.5 m/s2 2 m/s2 0.5 m/s2 v = a t t = v a I do We do You do Test I do We do You do LO:
SciDoc Hard answers Hard answers 2 10 24 85 0 I do We do You do Test I do We do You do LO:
SciDoc Hard answers Hard answers 160 m/s 1 m/s2 1 m/s2 I do We do You do Test I do We do You do LO:
SciDoc Struggle time! Struggle time! Exam questions so exam conditions! You have 5 minutes! I do We do You do Test I do We do You do LO:
SciDoc It accelerates It accelerates faster I do We do You do Test I do We do You do LO:
SciDoc Acceleration = Change in velocity Time taken 9 minutes = 9 60 = 540 seconds Acceleration = 8100 540 = 15 m/s2 Velocity is speed with direction/it is a vector I do We do You do Test I do We do You do LO:
SciDoc Multi Multi- -step calculations step calculations Stretch: An F1 car has a start velocity of 20 m/s and after 10 seconds has a kinetic energy of 1,250,000 J. If the F1 car has a mass of 1000kg, what is its acceleration? A multi-step calculation is when you can be expected to use more than one equation. I do We do You do Test I do We do You do LO:
SciDoc Stretch review Stretch review An F1 car has a start velocity of 20 m/s and after 10 seconds has a kinetic energy of 1,250,000 J. If the F1 car has a mass of 1000kg, what is its acceleration? I do We do You do Test I do We do You do LO:
SciDoc Multi Multi- -step calculations step calculations 1. A horse has a start velocity of 2m/s and after 15 seconds has a kinetic energy of 40,000 J. If the horse has a mass of 800kg, what is its acceleration? 2. A cat has a start velocity of 0.5 m/s and after 5 seconds has a kinetic energy of 32J. If the cat has a mass of 4kg, what is its acceleration? 3. An aeroplane has a start velocity of 100 m/s and after 4 minutes has a kinetic energy of 1.6 GJ. If the aeroplane has a mass of 80,000 kg, what is its acceleration? I do We do You do Test I do We do You do LO:
SciDoc 1. final velocity = 10 m/s acceleration = 0.67 m/s2 2. final velocity = 4 m/s acceleration = 0.8 m/s2 3. final velocity = 200 m/s acceleration = 0.41 m/s2 I do We do You do Test I do We do You do LO:
