Physics 9702/53 — May/June 2011

Cambridge A-Level · Planning, Analysis and Evaluation · worked solutions for every part, with the mark scheme

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Topics Analysis, Conclusions and Evaluation · Planning

Q115MPlanningAnalysis, Conclusions and EvaluationFree sample

A student wishes to investigate projectile motion.

A small ball is rolled with velocity $v$ along a horizontal surface. When the ball reaches the end of the horizontal surface, it falls and lands on a lower horizontal surface. The vertical displacement of the ball is $p$ and the horizontal displacement of the ball is $q$ , as shown in Fig 1.1.

Fig. 1.1

It is suggested that

gq^2 = 2pv^2

where $g$ is the acceleration of free fall.

Design a laboratory experiment to investigate how $q$ is related to $p$ and how $v$ may be determined from the results. You should draw a diagram, on page 3, showing the arrangement of your equipment. In your account you should pay particular attention to

(a)

the procedure to be followed,

(b)

the measurements to be taken,

(c)

the control of variables,

(d)

the analysis of the data,

(e)

the safety precautions to be taken.

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