The driver sees an obstacle and after 0.50 s applies the brakes.
The stopping distance of the car is 38 m.
deceleration = ................................ ms–2 [3]
The speed v and distance x are related by the equation mv 2 = Fx where m is the mass of the marble and F is the constant frictional force acting on the marble.
- Describe how an experiment can be conducted in the laboratory to investigate the relationship between v and x.
- Explain how the data can be analysed to determine F.
[6]
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