Question

A car starts from rest at a stop sign. It accelerates at 3.6 m/s^2 for 6.5 s, coasts for 1.7 s, and then slows down at a rate of 2.5 m/s^2 for the next stop sign.

How far apart are the stop signs?

Answer #1

A car starts from rest at a stop sign. It accelerates at 2.0
m/s2 for 7.0 seconds, coasts For 2.7 s, and then slows down at a
rate of 1.5 m/s2 for the next stop sign. How far apart are the stop
signs?

1. A skier is gliding along at 3.0 m/s on horizontal,
frictionless snow. He suddenly starts down a 16 ∘ incline. His
speed at the bottom is 16 m/s .
a) What is the length of the incline?
b) How long does it take him to reach the bottom?
2.The Gulf Stream off the east coast of the United States can flow
at a rapid 3.7 m/s to the north. A ship in this current has a
cruising speed of...

An electric vehicle starts from rest and accelerates at a rate
of 2.1 m/s2 in a straight line until it reaches a speed
of 19 m/s. The vehicle then slows at a constant rate of 1.3
m/s2 until it stops. (a) How much time
elapses from start to stop? (b) How far does the
vehicle move from start to stop

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...

1 point) A truck starts from rest and accelerates at
1?/?2. 6 s later, a car accelerates from rest at the
same starting point with an acceleration of
2.7?/?2.
a) Where and when does the car catch the truck?
1. ?m from the starting point
2. at ? seconds from the moment the truck started to
accelerate.
b) What are their velocities when they meet?
The truck : m/s
The car : m/s

A car starts from rest and accelerates at a constant rate
travelling a distance of 210 m in 14.9 s. The car continues to
accelerate at the same rate for an additional 199 m. What is the
speed (in m/s) of the car after it has travelled the (210+199)
m?

A car starts from rest and travels east with an acceleration of
4x10^-3 m/s^2. Another car travels toward west at a constant speed
of 70kph. The two cars are 100-km apart. Find (a) the time it takes
for the two cars to meet and (b) the time it takes for them to be
100-km apart for the second time.

a
car accelerates at a constant rate from zero to 9.7 m/s in 5.2
seconds and then slows to 5.1 m/s in the next 1.4 seconds. What is
its average acceleration in m/s2 during the overall time
period?

A
car initially traveling with a velocity if 12 m/s accelerates at a
constant rate of 2.5 m/s^2 for 2 seconds.
A) will this car cover more or less ground in 2 seconds than a
second car initially moving at 12m/s but no acceleration ?
B) how far is this car moving after 2seconds ?
C) how far has it traveled during the 2 second interval
?

The wheels on a car have a radius of 0.250 m. The car starts
from rest and the driver accelerates the car at a constant rate and
reaches a speed of 47.0 miles per hour in 7.0 s. a) Calculate the
angular acceleration of the wheels of the car. b) The driver
applies the brakes for 5.0 s which decelerates the car at a rate of
15.0 rad/s2. Calculate the total distance the car traveled during
the entire 12.0 s...

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