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Transport Homework #2

Acceleration from First Principles

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220801/2000hrs Corrected error in question 7

Name: ______________

  1. Complete: Speed is the rate of change of ____________
  2. Acceleration is the rate of change of ____________
  3. A car moving at 20mph increases its speed over a five second time interval to 40 mph. What is the acceleration of the car in mph s-1

    4. In these questions, calculate the acceleration of each vehicle

  4. A car, from 0mph to 60mph in 20s
  5. Train, from 0mph to 100mph in 2 min 5 sec.
  6. F18 Jet from 0mph to 180mph in 1.5 seconds
  7. Electrons in a TV (cathode ray) tube are fired towards a fluorescent screen from an electron gun with a speed of about 6e+7ms-1. If they accelerate to this speed from rest in a time of about 1.6e-10s show that their acceleration is around 8.4e+17 mph/s. (Hint work out the acceleration in ms-2 first).
  8. What is the opposite of acceleration?

    9. In these questions, calculate the accelerations in m s-2

  9. From 2 m s-1 to 10 m s-1 in 4 s, acceleration = ?
  10. From 0 m s-1 to 15 m s-1 in 3 s, acceleration = ?
  11. From -1 m s-1 to +1 m s-1 in 2 s, acceleration = ?

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