a boy of height 95cm is walking away from base of a lamp post at speed lf 1.5 m/s. if the lamp post is 3.8m above yhe ground. find the lenth of his shadow after 5 second
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height of boy(h1) =95cm = 0.95m
height of lamp post(h2) = 3.8 m
speed(s) = 1.5m/s
time(t) = 5 sec
total distance travelled =s*t = 1.5*5 =7.5m
7.5/3.8 = length of shadow/h1
length of shadow = 7.5*h1/3.8
length of shadow = 7.5*0.95/3.8
length of shadow = 2*0.95
length of shadow = 1.9m
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Answer:
Step-by-step explanation:
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