June 2011 Theory > Bearing of P from
- 270° - 29.74
- 240.39
b) For the identity clemente
From the table,
66 - 6
> Identity clement is 6.
9. An aircraft leaves airport P and flies on a
bearing 060°. From a distance of 10 km
due cast of P. another aircraft leaves
airport R and flies on a bearing of 330°
Both planes meet at Q. Using ruler and a
pair of compasses only, with a scale of
1 cm to 1 km
a) construct triangle PQR.
b) how far is from:
i) P.
ii) R2
c) measure ZPOR
d) Calculate how far north of R, Qis,
correct to one decimal place.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?