Higher Plus
18th August 1990
- 1Velocity Time Graphs2 marks
A train slows steadily from 34 m/s to rest in 4 seconds. Work out its deceleration.
- 2Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = c and vector OB = m. N is the point dividing AB in the ratio 3 : 1. Write vector ON in terms of c and m.
- 3Probability Equation Questions3 marks
The probability of winning a game is 1/4. A player expects 24 wins. How many games did they play?
- 4Histograms3 marks
On a histogram the bar for 20 < x <= 30 has a frequency density of 1.5. How many values are in that class?
- 5Bounds3 marks
A car covers 300 m (to the nearest 10 m) in 2 s (to the nearest second). Work out the lower bound of its speed, to 2 decimal places.
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