Question

In: Physics

A 34 kg cheetah waits to stalk its prey in the desert, tentatively watching a gazelle....

A 34 kg cheetah waits to stalk its prey in the desert, tentatively watching a gazelle.

A. Once he decides to attack, how much net force must the cheetah apply to itself to reach 29 m/s directly west in 3.1 seconds?

b. Shortly after reaching top speed, the cheetah must navigate around a tree. If the cheetah is now moving 23.5 m/s north, what is its change in momentum?

c. Realizing the gazelle he thought he saw was simply a mirage, the cheetah decides to change his course and go hunting elsewhere. Not in much of a hurry the cheetah now moves 23 degrees west of north at 13 m/s. what is the cheetah's new change in momentum?

Solutions

Expert Solution

------------------------------ Solution of part A ---------------------------------

mass of cheeta = 34 Kg

final velocity = 29 m/s

time taken = 3.1 s

and

So force required by cheeta is 318.065 N

------------------------------ Solution of part B ---------------------------------

change in momentum = fnal momentum - initial momentum

------------------------------ Solution of part C ---------------------------------

change in momentum = fnal momentum - initial momentum

genius_generous answered 2 years ago
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