## Resources

The specification will tell you most of the answers to these questions. The fun starts on page 50 – https://filestore.aqa.org.uk/resources/physics/specifications/AQA-8463-SP-2016.PDF

2. You may also find the BBC Bitesize website helpful also. https://www.bbc.co.uk/bitesize/guides/zwc7pbk/revision/1

## Questions

- Write down an equation to calculate the average acceleration of a moving object?
- What are the units of acceleration?
- What is meant by a change in velocity?
- What word can be used to describe an object that is slowing down?
- Research some typical accelerations using the units given in Q2. For instance, an aeroplane taking off or a train decelerating
- What does the gradient of a velocity-time graph tell us?
- What does the area underneath a velocity-time graph tell us? The area is often a triangle.
- The area underneath a graph can be sometimes calculated using a method of counting squares. What is meant by this?
- Do you know this equation?
- What are units of velocity? What are the units of distance? What are the units of acceleration?
- What is the value of gravity near the Earth’s surface for any object falling freely under gravity?
*An object falling through a fluid initially accelerates due to the force of gravity. Eventually, the resultant force will be zero and the object will move at its terminal velocity.*Sketch a graph of velocity against time for a skydiver. Label all the important points and explain what is happening at each point in terms of forces. Air resistance and weight are important forces to consider.