What does the slope of a velocity (or speed) vs. time graph mean? Physics homework help

What does the slope of a velocity (or speed) vs. time graph mean? Physics homework help.
Compare the slope of the velocity-time graph to the average of all your acceleration values. Are they close? What does the slope of a velocity (or speed) vs. time graph mean? Explain the answer using your data. How does the value of g that you calculated compare to the accepted value of 9.80 m/s2? What is your percent error? Remember that the value of g can be calculated by using g = a/sinθ and percent error can be calculated using the following equation 
the equation is % error= ((measured value-accepted value)/accepted value) x 100
I tried solving this but only got this:
_x000D_

% error= (0.1846 – 9.8)/9.8) x 100
I uploaded the data table from my experiment and i hope somone would lend me some help because ‘;m stuck!

What does the slope of a velocity (or speed) vs. time graph mean? Physics homework help

.awasam-promo3 {
background-color: #F5F9FF;
color: #000000;
text-align: center;
padding: 20px;
border-radius: 10px;
}

.button {
background-color: #4CAF50;
border: none;
color: white;
padding: 10px 20px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 16px;
margin: 4px 2px;
cursor: pointer;
border-radius: 5px;
}

.button-whatsapp {
background-color: #41D07D;
border: none;
color: white;
padding: 10px 20px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 16px;
margin: 4px 2px;
cursor: pointer;
border-radius: 5px;
}

.awasam-alert {
color: red;
}

Needs help with similar assignment?
We are available 24×7 to deliver the best services and assignment ready within 6-8 hours? Order a custom-written, plagiarism-free paper

Get Answer Over WhatsApp

Order Paper Now