PD3 Practice Questions

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PD3 Practice Questions
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New cars are tested in crashes. Scientists study
the results. Two cars crash into a wall. Look at
the simple graphs of the results.       (a)
Car A takes 0.2 s to stop during the
crash. Calculate the acceleration of car A
during the crash.  

3     (b)          
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  (b)         After the crash car B is more
damaged. Car B has much greater forces on it in
the crash. Suggest reasons why.  
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(a) Nick thinks cars travel too fast near his
school. He calculates the speeds of cars as
they move past the school.   Write about how he
did the experiment. In your answer describe
what equipment he used what measurements
he took.     4
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Five cars travel along the motorway. They go
through two tunnels. Both tunnels are the same
length. They go through tunnel A first.   Look
at the results.  
    (a) Which car travels fastest through
tunnel A? 1   (b) Which car travels slowest
through tunnel B? 1   (c) Which cars increase
their speeds? 1   (d) Which car has the
highest acceleration? 1   (e) Tunnel A is
200m long. Calculate the speed of the Mini
through tunnel A. 2