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# Speed, Velocity And Acceleration

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A lesson ppt on speed, velocity and acceleration for high school students.

A lesson ppt on speed, velocity and acceleration for high school students.

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### Transcript

• 1. Topic 2: Kinematics
• 2. 2.1 Speed, Velocity and Acceleration
• Speed is the distance traveled divided by time.
• Speed = distance traveled/time taken
• The SI unit of speed is metre per second (m s -1 )
• 3. 2.1 Speed, Velocity and Acceleration
• Velocity is the distance traveled in a given direction (or displacement) divided by the time taken.
• Velocity = displacement/time taken
• The SI unit of speed is metre per second (m s -1 )
• 4. 2.1 Speed, Velocity and Acceleration
• Two objects travelling with the same speed but in different directions have different velocities.
• Since velocity has both magnitude and direction. it is a vector quantity.
• 5. 2.1 Speed, Velocity and Acceleration
• Acceleration is the rate of change of velocity.
• Acceleration
• = change in velocity/time taken
• = (final velocity - initial velocity)/time taken
• The acceleration is uniform if the rate of change of velocity is constant.
• 6. 2.1 Speed, Velocity and Acceleration
• In linear motion, a body traveled in a straight line. The direction of motion does not change. Any change in the velocity is due to the change in speed.
• Hence the acceleration is
• acceleration = Change in speed/time taken
• 7. 2.1 Speed, Velocity and Acceleration
• 8. 2.1 Speed, Velocity and Acceleration
• When the velocity decreases, the acceleration is negative and the acceleration is known as deceleration or retardation.
• 9. 2.1 Speed, Velocity and Acceleration
• 10. 2.1 Speed, Velocity and Acceleration
• Non-uniform acceleration â€” the rate of change of velocity is not constant, instead it changes with time
• 11. 2.1 Speed, Velocity and Acceleration
• 12. 2.1 Speed, Velocity and Acceleration
• 13. 2.1 Speed, Velocity and Acceleration
• 14. 2.1 Speed, Velocity and Acceleration
• 15. Practice Questions
• 16. Practice Questions