Page 17 - SP015 Past Years PSPM Chapter 1 -5 Ver.2020

PSPM SP015

PSPM 2014/2015 SF016/2 No. 2(b)

56. -1
40 m s

70 m

FIGURE 2.16

-1
FIGURE 2.16 shows a stone is thrown horizontally with initial velocity 40 m s from
the top of 70 m high building.

(a) Sketch the path traversed by the stone to the ground and indicate the velocity
components and resultant velocity of the stone 15 m from the ground. [3 m]

(b) Calculate the resultant velocity of the stone 15 m from the ground. [3 m]

(c) Sketch a graph of vertical acceleration versus time (a y vs t) for the falling stone
and label the value of acceleration. [2 m]

(d) Calculate the time of flight. [3 m]

(e) Calculate the range. [2 m]

Projectile Motion 0 < < 90

PSPM JAN 1999/2000 SF015/2 No. 10(a)

57. A ball is kicked with initial velocity u and makes an angle  with the horizontal line.
Determine the maximum height H that can be achieved by the ball and the time taken to
reach the maximum height in terms of u, , and g.
[3 m]

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