When a chameleon captures an insect, its tongue can extend 16 cm in 0.1 s. Find

Question

When a chameleon captures an insect, its tongue can extend 16 cm in 0.1 s. Find the magnitude of the tongue's acceleration assuming it is constant. How much time from the beginning of the tongue flip to capture does the insect have to get out of the way? A hot air balloon has just lifted off and is rising at a constant rate of 2.0 m/s. Suddenly one of the passengers realizes that she's left her camera on the ground and shouts down to one of her friends to throw it up to her. The friend picks up the camera and throws it with an initial velocity of 13.0 m/s. If the balloon's gondola (basket) is 2.5 m off the ground when the camera is thrown, how high is it when the woman catches the camera? (3.0 m) Divers compete by diving into a 3.0 m deep pool from a platform that is 10.0 m above the surface of the water. What is the minimum magnitude of the diver's acceleration after entering the water in order to keep from hitting the bottom? Assume all accelerations are constant. (33m/s)

Explanation / Answer

3)

Let a be the acceleration of the tongue

since acceleration is constant

we can write

S = 0.5 at^2

since given

S = 0.16 m

t = 0.1 sec

substituting we get

a = 32 m/sec^2

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