Physics

• What is the standard SI unit for time?

  Seconds
• What is the standard SI unit for distance?

  Meters
• What is the standard SI unit for weight and force?

  Newtons
• What is the standard SI unit for mass?

  Grams
• What is the standard SI unit for frequency?

  Hertz
• What is the standard SI unit for speed?

  Meters per second
• What are the multiples and submultiples of units that need to be learned?

  • Giga
  • Mega
  • Kilo
  • Centi
  • Milli
  • Micro
  • Nano
• How do you convert 0.2 centimeters to micrometers?

  Multiply by $10^4$
• What is 1 meter in centimeters?

  100 centimeters
• Why do you multiply by $10^4$ when converting from centimeters to micrometers?


  There are more micrometers than centimeters
• How many Hertz are in 12 megahertz?

  12 million Hertz
• How do you convert 9 milliseconds to seconds?

  Multiply by $10^{-3}$
• How many grams are in 47 kilograms?

  47,000 grams
• What are the key equations for speed, distance, and time?

  • Speed = Distance / Time
  • Distance = Speed × Time
  • Time = Distance / Speed
• How do you find speed from a distance-time graph?

  Distance divided by time
• What does a flat part of a distance-time graph indicate?

  The object is stationary
• How do you calculate acceleration from a velocity-time graph?

  Final speed minus initial speed over time
• What is the unit for acceleration?

  Meters per second squared
• How do you calculate distance traveled from a velocity-time graph?

  By finding the area under the graph
• What is the area of a triangle in a graph?

  1/2 × base × height
• How do you calculate the area of a rectangle in a graph?

  Length × width
• What does the term "constant velocity" mean?

  Velocity remains the same
• How do you find the average velocity of a toy car?

  Distance divided by time
• What is the equation linking acceleration, change in velocity, and time taken?

  Acceleration = change in velocity / time
• How do you calculate the average speed of a bus that travels 390 meters in 60 seconds?

  6.5 meters per second
• How can you explain the distance traveled by a bus in the first 30 seconds compared to the last 30 seconds?

  The area under the graph is larger
• What is the initial length of the queue in the supermarket scenario?

  6.1 meters
• How do you determine how many times a person is stationary in a queue?

  Count the flat portions of the graph
• How do you calculate the average speed of a person in a queue?

  Distance moved divided by time taken
• What is the distance a car traveled between applying brakes and stopping?

  22 meters
• What is the equation used to calculate the speed of a car just before brakes were applied?

  $V^2 =$$u^2 +$$2as$
• What is the difference between weight and mass?

  Weight changes with gravity, mass does not
• What is the equation linking weight, mass, and gravitational field strength?

  Weight = mass × gravitational field strength
• If a person has a mass of 50 kg on Earth, what is their weight?

  500 Newtons
• What is the weight of a 50 kg mass on the Moon?

  80 Newtons
• How does gravity affect weight?

  Weight changes with different gravitational fields
• What is the unit for force?

  Newtons
• What effects can a force have on an object?

  Change speed, direction, or shape
• Why is it important to follow the author on social media?

  For extra exam tips and explanations
• Why is it crucial to learn the conversion table thoroughly?

  Because conversion questions frequently appear