• Support PF! Buy your school textbooks, materials and every day products Here!

Motion in one direction

  • Thread starter sarah111
  • Start date
  • #1
2
0
On a straight road, a car speeds up at a constant rate from rest to 20 m/s over a 5 second interval and a truck slows at a constant rate from 20 m/s to a complete stop over a 10 second interval. How does the distance traveled by the truck compare to that of the car?
 

Answers and Replies

  • #2
SammyS
Staff Emeritus
Science Advisor
Homework Helper
Gold Member
11,225
951
On a straight road, a car speeds up at a constant rate from rest to 20 m/s over a 5 second interval and a truck slows at a constant rate from 20 m/s to a complete stop over a 10 second interval. How does the distance traveled by the truck compare to that of the car?
Hello sarah111. Welcome to PF !

What have you tried?

Where are you stuck?


You should show some work before anyone gives help.

... but, here's a hint:
What is the average velocity of each vehicle?​
 
  • #3
2
0
I feel like I can't answer the question because i don't know what the accceleration is. I tried using the equation for speed and found that the car stop 100m and the truck 200 but i dont feel that is right
 
  • #4
1,065
10
On a straight road, a car speeds up at a constant rate from rest to 20 m/s over a 5 second interval and a truck slows at a constant rate from 20 m/s to a complete stop over a 10 second interval. How does the distance traveled by the truck compare to that of the car?
Sketch a velocity vs. time graph.
The car starts from rest and constantly increasing the speed until finally attained 20m/s after 5 secs.
The truck starts from 20m/s and constantly reducing the speed till zero.
Distance travelled is - velocity x time
 
  • #5
SammyS
Staff Emeritus
Science Advisor
Homework Helper
Gold Member
11,225
951
sarah,

What equations do you know regarding constant acceleration?
 

Related Threads for: Motion in one direction

  • Last Post
Replies
4
Views
7K
  • Last Post
Replies
9
Views
2K
Replies
34
Views
4K
Replies
9
Views
600
Replies
3
Views
2K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
2
Views
2K
Top