61.8k views
3 votes
Eric is observing the velocity of a runner at different times. After one hour, the velocity of the runner is 5 km/h. After three hours, the velocity of the runner is 3 km/h.

Part A: Write an equation in two variables in the standard form that can be used to describe the velocity of the cyclist at different times. Show your work and define the variables used. (5 points)

Part B: How can you graph the equations obtained in Part A for the first 5 hours? (5 points)

User Isubuz
by
8.3k points

2 Answers

3 votes

Answer:

working on it

Explanation:

User Mootmoot
by
8.1k points
2 votes
v=u+at
when t=1hr
5=u+1a
when t=3 hrs
3=u+3a
subtract
2=-2a
a=-1
when a=-1
5=u-1
u=5+1=6
Hence v=6-t
where v is velocity at any time t
User Feng
by
7.5k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories