AS Physics Watch

AdoniF
Badges: 0
Rep:
?
#1
Report Thread starter 4 years ago
#1
This is a question from edexcel may 2009. I don't know how to answer it.

When asked to run one complete lap around a track, a student says, "However fast I run, My average velocity got the lap will bro zero."
Comment on his statement.

Help please:confused:
0
reply
pleasedtobeatyou
Badges: 18
Rep:
?
#2
Report 4 years ago
#2
Comment on this statement: It doesn't make sense
1
reply
Heimdall
Badges: 13
Rep:
?
#3
Report 4 years ago
#3
(Original post by AdoniF)
This is a question from edexcel may 2009. I don't know how to answer it.

When asked to run one complete lap around a track, a student says, "However fast I run, My average velocity got the lap will bro zero."
Comment on his statement.

Help please:confused:
He is moving in a circle, or similar shaped thing.

He ends up where he started to although he has moved in distance, his average velocity (speed of something in a given direction) is zero because he hasn't moved. That is the difference between velocity and speed.

If he does a 10km lam in 60 minutes, he ran at an average SPEED of 10km/h but if he arrived where he started, his average velocity is zero, since he goes in two different directions they cancel out.

Hope this helps
0
reply
Tytrox
Badges: 0
Rep:
?
#4
Report 4 years ago
#4
Velocity is a vector, and therefore has direction. Therefore the equation for velocity is velocity = DISPLACEMENT / time. Therefore, as he is running around a track, completing one lap causes his displacement to be zero, thereby causing his average velocity to always equal zero.

Hope this helps
0
reply
AdoniF
Badges: 0
Rep:
?
#5
Report Thread starter 4 years ago
#5
Thank you guys that really helped
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

University open days

  • University of the West of England, Bristol
    Undergraduate Open Afternoon - Frenchay Campus Undergraduate
    Wed, 23 Jan '19
  • University of East London
    Postgraduate Open Evening Postgraduate
    Wed, 23 Jan '19
  • University of Gloucestershire
    School of Education Open Day Postgraduate
    Wed, 23 Jan '19

Brexit: Given the chance now, would you vote leave or remain?

Remain (1623)
79.13%
Leave (428)
20.87%

Watched Threads

View All