Need physics help Just to review an assignment about velocity since teacher refuses to help

label Physics
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

Dec 7th, 2015

Thank you for the opportunity to help you with your question!

Q1)Velocity from b-c is the slope of the line bc

We have the coordinate of b(1,2.2) and c(2,4.2)

Velocity=change in y/change in x =(4.2-2.2)/(2-1)=2m/s

From c-d

Coordinate of c(2,4.2) and d(3,2.2)

Velocity =(2.2-4.2)/(3-2)=-2m/s

From d-e

d(3,2.2) and e(4,2.8)

Velocity =(2.8-2.2)/(4-3)=.6 m/s

Q2)The speed first decreases and then increases from a to b.

Q3)Velocity at t=2 s is the y coordinate at x=2 which is 1m/s

Q4)From 3-5 s

from 3-4 s acceleration is the slope of the line =(4,2)and (3,0) =(2-0)/(4-3) m/s^2 =2 m/s^2

Acceleration from 4-5 seconds is 0 as the velocity is constant=2 m/s

Q5)Speed of the carmen=Speed of the train-Speed of the Juan as both are moving in the same direction so the relative speed can be found out by substracting both the speed. =20m/s+5m/s=25 m/s

Q6)Acceleration=sqrt(400^2/2*3500) =4.78 m/s^2

Q7)Distance=Speed*time =344*1.5=516 m

I hope this would help you,but if you have any doubt regarding this,you can surely ask. :)
Dec 7th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Dec 7th, 2015
...
Dec 7th, 2015
Jun 27th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer