A race car travels on a circular track at an average rate of 125 mi/h. The radius of the track is 0.320 miles. What is the centr
1 answer:
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A) Both players are moving by uniformly accelerated motion, and we can write the position at time t of each of the two players as follows:
where
is the acceleration of the first player
is the acceleration of the second player
is the initial distance between the two players
and where I put a negative sign in front of the acceleration of the second player, since he's moving in the opposite direction of the first player.
The time t at which the two players collide is the time t at which
, therefore:
from whic we find
b) We can use the equation of
to find how far the first player run in t=8.5 s:
where
and where I put a negative sign in front of the acceleration of the second player, since he's moving in the opposite direction of the first player.
The time t at which the two players collide is the time t at which
from whic we find
b) We can use the equation of
Answer:
a)
b)
c)
d)
Explanation:
Given:
- distance down the field in the first interval,
- time duration of the first interval,
- distance down the field in the second interval,
- time duration of the second interval,
- distance down the field in the third interval,
- time duration of the third interval,
a)
velocity in the first interval:
b)
velocity in the second interval:
c)
velocity in the third interval:
d)
We know that the average velocity is given as the total displacement per unit time.