Question

A traveling with an initial velocity of 29.0 m/s begins to slow down. The truck slows down for 9.00 s , reaching a final velocity of 13.0 m/s . What is the truck acceleration.

Acceleration _______ m/s2

Answer 1

Method 1 Finding Average Velocity

Find average velocity when acceleration is constant.

Set up an equation with position and time instead.

Find the distance between the start and end points.

Calculate the change in time.

Divide the total displacement by the total time.

Solve problems in two dimensions.