Question
Cheetahs can accelerate to a speed of 20.0(m)/(s) in 2.50s and can continue to accelerate to reach a top speed of 27.8(m)/(s) . Assume the
Cheetahs can accelerate to a speed of
20.0(m)/(s)
in
2.50s
and can continue to accelerate to reach a top speed of
27.8(m)/(s)
. Assume the acceleration is constant until the top speed is reached and is zero thereafter. Let the
+x
-direction point in the direction the cheetah runs.\ Express the cheetah's top speed
v_(top )
in miles per hour (
{
(
:m(i)/(h))
}.\
v_(top )=|~,m(i)/(h)
|\ Starting from a crouched position, how much time
t_(accel )
does it take a cheetah to reach its top speed, and what distance
d
does it travel in that time?\
t_(accel)=\ d=(O)/()
\ If a cheetah sees a rabbit
129.0m
away, how much time
t_(total )
will it take to reach the rabbit, assuming the rabbit does not move and the cheetah starts from rest?
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