wandering17
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- HSC
- 2015
A plane is flying horizontally at 363·6km/h and its altitude is 600 metres. It is to drop a
food parcel onto a large cross marked on the ground in a remote area.
( a) Convert the speed of the plane into metres per second.
= divide by 3600 x 1000, = 101m/s
(b) Derive expressions for the horizontal and vertical components of the food parcel's
x= Vt and y = -5t^2 + 600
displacement from the point where it was dropped. (Take g = 10 m/s2.)
(c) Show that the food parcel will be in the air for 2root30 seconds.
let y=0.
(d) Find the speed and angle at which the food parcel will hit the ground.
Still need help with this please anyone?
(e) At what horizontal distance from the cross, correct to the nearest metre, should the
plane drop the food parcel?
food parcel onto a large cross marked on the ground in a remote area.
( a) Convert the speed of the plane into metres per second.
= divide by 3600 x 1000, = 101m/s
(b) Derive expressions for the horizontal and vertical components of the food parcel's
x= Vt and y = -5t^2 + 600
displacement from the point where it was dropped. (Take g = 10 m/s2.)
(c) Show that the food parcel will be in the air for 2root30 seconds.
let y=0.
(d) Find the speed and angle at which the food parcel will hit the ground.
Still need help with this please anyone?
(e) At what horizontal distance from the cross, correct to the nearest metre, should the
plane drop the food parcel?
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