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Speed = distance/time

1. Homework Statement

Plot on a graph the speed-time graph for the Mars lander (Fig 2.2) and find its regression line
This should be y=3.7x+20
This tells you the initial speed was 20 m/s
and the acceleration due to gravity on Mars is 3.7 m/s2


2. Homework Equations

y=mx + b

3. The Attempt at a Solution

I just need confirmation on my data table:
Time Speed
0 20
1 23.7
2 27.4
3 31.1
4 34.8
5 38.5
6 42.2
7 45.9
 

Redbelly98

Staff Emeritus
Science Advisor
Homework Helper
12,038
127
Re: speed=distance/time

Hello,

It's pretty straightforward to check the equation with your data. If you let x equal 1, 2, 3, etc., what do you get for y? Does the value of y you get from the equation agree with the value of y in the table?
 

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