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A girl of height 90 cm is walking away ...

A girl of height 90 cm is walking away from the base of a lamp-post at a speed of 1.2 m/s. If the lamp is 3.6 m above the ground, find the length of her shadow after 4 seconds.

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To find the length of the girl's shadow after 4 seconds, we can follow these steps: ### Step 1: Convert the heights into the same units The height of the lamp-post is given as 3.6 m, which we convert to centimeters: \[ \text{Height of lamp-post} = 3.6 \, \text{m} = 360 \, \text{cm} \] The height of the girl is already given as 90 cm. ...
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