Scottish Highers ¡ Higher Physics

Our Dynamic Universe

15 practice questions, each with the answer and an explanation.

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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 15 questions

  1. A car moving at 5.0 m/s accelerates uniformly at 2.0 m/s² for 6.0 s. What is its final speed?
  2. A trolley accelerates from rest at 3.0 m/s² for 4.0 s. How far does it travel?
  3. A runner at 4.0 m/s accelerates at 2.0 m/s² over 15 m. What is the final speed to 2 significant figures?
  4. A ball is kicked at 20 m/s at 30° above the horizontal. What is the vertical component of its initial velocity?
  5. For the ball kicked at 20 m/s at 30° above the horizontal (ignore air resistance, m/s²), what is its range on level ground?
  6. What is the momentum of a 1200 kg car travelling at 15 m/s?
  7. A 2.0 kg trolley moving at 3.0 m/s collides with a stationary 1.0 kg trolley and they stick together. What is their common speed?
  8. A 6.0 N force acts on a ball for 0.50 s. What is the change in momentum?
  9. A 2.0 kg trolley travelling at 4.0 m/s collides with a stationary 1.0 kg trolley. Afterwards the trolleys move at 1.33 m/s and 5.33 m/s respectively. Which statement is correct?
  10. Two 1000 kg masses are 2.0 m apart. Using N m² kg⁝², what is the gravitational force between them?
  11. A spaceship moves at 0.80c relative to Earth. A clock on the ship measures 3.0 s. What time passes on Earth?
  12. A rod has a length of 100 m in its own frame. What length is measured by an observer when it moves past at 0.60c along its length?
  13. A galaxy's spectral line of rest wavelength 600 nm is observed at 612 nm. What is the redshift ?
  14. For the galaxy with redshift , what is the recession speed? ( m/s, )
  15. Which observation is evidence for the Big Bang theory?

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