### Higher Physics Revision Set One

- A search helicopter flies 300km due east from its base then 400km due south to another base in a time of 2 hours.

a) What is the helicopter`s displacement from the first base?

b) What is the average speed of the flight?

c) What is its average velocity for the flight?

- Linda was measuring the acceleration of gravity. Her results were, in m/s
^{2}:

9.72, 9.83,10.52, 9.67 and 9.82.

What was the average value of the acceleration and what is the random error in the result?

- A car travelling with a velocity of 12m/s accelerates at 3m/s
^{2} along a distance of 200m.

What will be the cars velocity at the end of the 200m?

- From the following acceleration time graph draw the corresponding velocity time graph.

- A basketball player jumps 0.85m into the air.

He has a forward velocity of 2.5m/s.

Find:

a) the velocity he left the ground with,

b) the time he was in the air,

c) and the horizontal distance he moved during the jump.

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