A ladder 5 m in length is resting against a vertical wall. The bottom

1.	A ladder 5 m in length is resting against a vertical wall. The bottom of the ladder is pulled along the ground away from the wall at the rate of 1.5 m/sec. The length of the higher point of the ladder when the foot of the ladder is 4.0 m away from the wall decreases at the rate of (a) 1 (b) 2 (c) 2.5 (d) 3
Answer» Correct answer is (b) 2

A ladder 5 m in length is resting against a vertical wall. The bottom of the ladder is pulled along the ground away from the wall at the rate of 1.5 m/sec. The length of the higher point of the ladder when the foot of the ladder is 4.0 m away from the wall decreases at the rate of (a) 1 (b) 2 (c) 2.5 (d) 3

Answer»

Correct answer is

(b) 2