🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION →
Log in
Physics
2
answers
0
watching
49
views
27 Nov 2019

A blue car pulls away from a red stop-light
just after it has turned green with a constant
acceleration of 0.4 m/s2. A green car arrives
at the position of the stop-light 6 s after the
light had turned green.
If t = 0 when the light turns green, at what
time does the green car catch the blue car if
the green car maintains the slowest constant
speed necessary to catch up to the blue car?
Answer in units of s.

What is the constant speed of the green car?
Answer in units of m/s.

What is the instantanous speed of the blue
car when the green car catches up to it?
Answer in units of m/s.

Watch
2
answers
0
watching
49
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share
Reid Wolff
Reid WolffLv2
26 Nov 2019
Already have an account? Log in
Share

Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

Your friend wanted to show off his new, 1300 kg, 5.5 m long, redcar and wanted to impress you with its speed. You believedthat
your 1200 kg, 6.9 m long, blue car is at least as fast and wantedto demonstrate its performance to him. The two of youpositioned
your cars next to each other at a red traffic light. When thetraffic light turned green, the red car began speeding up at therate of 3 ,
but you kept your blue car at rest for 3.4 s before you startedspeeding up at the rate of 5.1 .


a) How far did the red car travel during the 3.4 s that the bluecar stayed at rest?

m

b) How fast was the red car moving after the first 3.4 s?

m/s


When your blue car caught up to your friend's red car, your twocars were next to each other.


c) How much time did it take for the blue car to catch up to thered car?

s

d) How far did the blue car travel to catch up to the redcar?

m

d) How fast was the red car moving when the the blue car caught upto it?

m/s

e) How fast was the blue car moving when it caught up to the redcar?

m/s



Your friend wanted to show off his new, 2000 kg, 5.6 m long, redcar and wanted to impress you with its speed. You believedthat
your 1300 kg, 6.7 m long, blue car is at least as fast and wantedto demonstrate its performance to him. The two of youpositioned
your cars next to each other at a red traffic light. When thetraffic light turned green, the red car began speeding up at therate of 3.5 m/s**2 ,
but you kept your blue car at rest for 2.3 s before you startedspeeding up at the rate of 5.6 m/s**2 .

a) How far did the red car travel during the 2.3 s that the bluecar stayed at rest?

m

b) How fast was the red car moving after the first 2.3 s?

m/s

When your blue car caught up to your friend's red car, your twocars were next to each other.

c) How much time did it take for the blue car to catch up to thered car?

s

d) How far did the blue car travel to catch up to the redcar?

m

d) How fast was the red car moving when the the blue car caught upto it?

m/s

e) How fast was the blue car moving when it caught up to the redcar?

m/s

PLEASE GIVE ME A BRIEF EXPLANATION ON HOW YOU COME UP WITH ANSWERAND FORMULAS OR EQUATIONS????

To save fuel, some truck drivers try to maintain a constant speedwhen possible. A truck traveling at 28.0 km/hr approaches a carstopped at the red light. When the truck is 165.5 meters from thecar the light turns green and the car immediately begins toaccelerate at 2.4 m/s2. How close does the truck come to the carassuming the truck does not slow down?

How far from the stop light has the car travelled when the truckreaches its closest distance?

( ps. i can not solve it the way i thought about because i do nothave the final speed of the car ! )

Weekly leaderboard

Home
Homework Help 3,900,000
Physics 110,000
Start filling in the gaps now
Log in