Task 1: What is your target?

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Task 2: Write an equation that links force to work

• F= Work x distance

• Work= Force x distance

• Work = Force/ Distance

• Work = Distance/force

Task 3:

1- If the weight of the car is =20000   N , Its mass =               kg 

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Task 3:

2- The car is traveling with a speed:v = 28  m/s   then it crashed t a tree which stopped the car in a distance 

d= 30 cm

The car’s kinetic energy before the crash =. J

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Task 2:

3- According to Work Energy Equivalence, loss in kinetic energy is = work done by the brakes

Work = F x d 

impact force F   =                N

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Task 3

4- This force is eequivalent to a mass of : tonnes

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Task 4:

Calculate for this driver (car of weight 20000 N) at speed (28 m/s) with seatbelt on, the impact force. 

Remember the seatbelt increases the stopping distance 4 times.

Force= N

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Task 5 Use your answer of impact force with car seatbelt and impact force without seat belt and this web source Traffic Accident Data to discuss The science behind the importance of using seatbelt- Use Criterion Di and Diii

Task 6 Mark your answers according to the Criterion D rubric ​ ​

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