If you grab your green textbook and turn to page 77, you’ll see our new friend the formula for acceleration, and below that the distance-time graph. Note that over the page is a comment that the area under a graph will give you the distance travelled – we will have to cover that in class. You may have covered it in maths (but I’ll pretend you haven’t and teach it anyway).
Try question one on page 78. Note that you have to convert the units for a). There will almost certainly be at least one question at the end of the year on converting units – its one of those doddle questions they put in for easy ‘A’s. Always double check these ones if you are arithmetically challenged like me. It’s far too easy to put the decimal point in the wrong place!
For d) when they say use the graph, what they really mean is use the numbers on the graph – you do this with maths, getting the numbers from the picture. They want to know you know how to read a graph, and do not tie yourself in knots trying to figure a new way to figure out v=d/t.
Calculating deceleration is the same as calculating acceleration but you’ll get a NEGATIVE number.
Let me know how you get on….