A grasshopper leaps into the air from the edge of a vertical cliff, as shown in Fig. P3.63. Use information from the figure to find (a) the initial speed of the grasshopper and (b) the height of the cliff.
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(a) the initial speed of the grasshopper
Let us consider vertical component of velocity,
where,as it reaches max height, its final velocity will be zero,
Initial velocity =v sin 50,
distance s = 6.74 cm = 0.0674 m
Acceleration , a = g =
Substituting given data in above equation,
v = 1.5 m/s
Therefore, the initial velocity of the grasshopper is 1.5 m/s.