10ms hm 18ms B Figure 4 The fixed point A is h metres vertically above the point O that is on horizontal ground At time t= 0, a particle Pis projected from A with speed 10ms. The particle moves freely under gravity. At time t = 2.5 seconds, P strikes the ground at the point B. At the instan when P strikes the ground, the speed of P is 18ms', as shown in Figure 4. (a) By considering energy, find the value of h.
10ms hm 18ms B Figure 4 The fixed point A is h metres vertically above the point O that is on horizontal ground At time t= 0, a particle Pis projected from A with speed 10ms. The particle moves freely under gravity. At time t = 2.5 seconds, P strikes the ground at the point B. At the instan when P strikes the ground, the speed of P is 18ms', as shown in Figure 4. (a) By considering energy, find the value of h.
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Transcribed Image Text:8.
10ms
A
hm
18 ms
B
Figure 4
The fixed point 4 is h metres vertically above the point O that is on horizontal ground.
At time t= 0, a particle Pis projected from A with speed 10ms. The particle moves freely
under gravity. At time t= 2.5 seconds, P strikes the ground at the point B. At the instant
when P strikes the ground, the speed of P is 18ms, as shown in Figure 4.
(a) By considering energy, find the value of h.
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