Question

Two cars start from rest at a red stop light. When the light
turns green, both cars accelerate forward. The blue car accelerates
uniformly at a rate of 3.3 m/s^{2} for 3.9 seconds. It then
continues at a constant speed for 13.7 seconds, before applying the
brakes such that the car’s speed decreases uniformly coming to rest
219.99 meters from where it started. The yellow car accelerates
uniformly for the entire distance, finally catching the blue car
just as the blue car comes to a stop.

How far does the blue car travel before its brakes are applied to slow down?

What is the acceleration of the blue car once the brakes are applied?

What is the total time the blue car is moving?

What is the acceleration of the yellow car?

Answer #1

Two cars start from rest at a red stop light. When the light
turns green, both cars accelerate forward. The blue car accelerates
uniformly at a rate of 5.1 m/s2 for 4.3 seconds. It then continues
at a constant speed for 11.9 seconds, before applying the brakes
such that the car’s speed decreases uniformly coming to rest 361.87
meters from where it started. The yellow car accelerates uniformly
for the entire distance, finally catching the blue car just as the...

Two cars start from rest at a red stop light. When the light
turns green, both cars accelerate forward. The blue car accelerates
uniformly at a rate of 5.7 m/s2 for 3.1 seconds. It then
continues at a constant speed for 8.4 seconds, before applying the
brakes such that the car’s speed decreases uniformly coming to rest
202 meters from where it started. The yellow car accelerates
uniformly for the entire distance, finally catching the blue car
just as the...

Two cars start from rest at a red stop light. When the light
turns green, both cars accelerate forward. The blue car accelerates
uniformly at a rate of 5.3 m/s2 for 4.7 seconds. It then continues
at a constant speed for 14.3 seconds, before applying the brakes
such that the car

A tortoise and hare start from rest and have a race. As the race
begins, both accelerate forward. The hare accelerates uniformly at
a rate of 0.8 m/s2 for 4.4 seconds. It then continues at
a constant speed for 13.5 seconds, before getting tired and slowing
down with constant acceleration coming to rest 61 meters from where
it started. The tortoise accelerates uniformly for the entire
distance, finally catching the hare just as the hare comes to a
stop.
1.What...

A tortoise and hare start from rest and have a race. As the
race begins, both accelerate forward. The hare accelerates
uniformly at a rate of 1.5 m/s2 for 4.2 seconds. It then continues
at a constant speed for 12.4 seconds, before getting tired and
slowing down with constant acceleration coming to rest 108 meters
from where it started. The tortoise accelerates uniformly for the
entire distance, finally catching the hare just as the hare comes
to a stop.
1)...

A tortoise and hare start from rest and have a race. As the race
begins, both accelerate forward. The hare accelerates uniformly at
a rate of 0.8 m/s2 for 4.4 seconds. It then continues at
a constant speed for 13.5 seconds, before getting tired and slowing
down with constant acceleration coming to rest 61 meters from where
it started. The tortoise accelerates uniformly for the entire
distance, finally catching the hare just as the hare comes to a
stop.
How...

A tortoise and hare start from rest and have a race. As the race
begins, both accelerate forward. The hare accelerates uniformly at
a rate of 1.3 m/s2 for 4.7 seconds. It then continues at a constant
speed for 13.3 seconds, before getting tired and slowing down with
constant acceleration coming to rest 114 meters from where it
started. The tortoise accelerates uniformly for the entire
distance, finally catching the hare just as the hare comes to a
stop. 1)...

A car is at rest at a stop sign and there is another stop sign
100 m down the road. The car can brake with an acceleration of 16
m/s/s. The car accelerates with a constant rate for some time
before accelerating with that braking rate to come to a stop at the
second stop sign. The entire trip takes 10 seconds. Let right be
positive. Don't round until the end. Report using 3 digits. Don't
enter units.
1/ With...

In a quarter-mile drag race, two cars start simultaneously from
rest, and each accelerates at a constant rate until it either
reaches its maximum speed or crosses the finish line. Car A has an
acceleration of 10.6 m/s2 and a maximum speed of 104
m/s. Car B has an acceleration of 11.7 m/s2 and a
maximum speed of 87.5 m/s. (a) Which car wins the
race? (b) By how many seconds does this car win
the race?

1) A car is stopped for a traffic signal. When the light turns
green, the car accelerates, increasing its speed from 0 to 4.90 m/s
in 0.834 s. (a) What is the magnitude of the linear impulse
experienced by a 74.0-kg passenger in the car during the time the
car accelerates? (b) What is the magnitude of the average total
force experienced by a 74.0-kg passenger in the car during the time
the car accelerates?
2) A 67-kg fisherman in...

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