A cheetah can maintain its maximum speed of 100 km/hr for 35.0 seconds. What min

Question

A cheetah can maintain its maximum speed of 100 km/hr for 35.0 seconds. What minimum distance must a gazette running 80.0 km/hr be ahead of the cheetah to escape? a.194 m b. 167 m c. 70 m d. 125 m Plane A is flying at 430 mph in the northeast direction relative to the earth. Plane B is flying at 500 mph in the north direction relative to the earth. What is the speed of Plane B as observed from Plane A? a. 532 mph b. 860 mph c. 362 mph d. 659 mph e. 669 mph Your friend takes a multi-vitamin every day because her doctor told her it was good for her. Which source of knowledge is she relying on? a. Authority b. Intuition c. Sensory data d. Reason If the principle of Time Symmetry is true, which of the following must also be true? a. The laws of nature wall be the same 1000 years from now as they are today. b. The models of physics used by scientists 1000 years from now must be the same as they are today. c. The world would appear unchanged if the direction of time were reversed. d. The plants and animals, the mountains and streams which we observe a million years from now will look almost identical to those we see today. e. Uniform motion is undetectable. Two identical encyclopedias are dropped. Encyclopedia A is dropped from 5 feet off the ground and Encyclopedia B is dropped from 10 feet off the ground Encyclopedia B is topped first. When Encyclopedia B reaches exactly 5 feet above the ground, Encyclopedia A is dropped. Which encyclopedia has the greater force and thus the greater acceleration acting on it? Which encyclopedia hits the ground first? Which encyclopedia is traveling faster when it hits? Both encyclopedia A's and B's covers hit the ground face down. Does Encyclopedia A or encyclopedia B exert the greater force on the ground?

Explanation / Answer

Answer 11

The relative velocity of cheetah with respect to gazelle =100 - 80 =20 km/hr = 20000/3600 =5.555 m/s.

Cheetah can run constantly this speed for 35 s

Suppose the gazelle will also be able to run at constant speed for 35 seconds.

Distance covered by cheetah dc =35x5.556 = 194.46 m.

So gazelle should be194.46 m away to escape.

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