Question

acceleration review
forces and motion: acceleration
a = \frac{v_f - v_i}{t}
directions: complete the following problems either on this document or on the back side of your graphic organizer. use the formula for acceleration.
sample problem:
a car starts from a stoplight and is traveling with a velocity of 10 m/sec east in 20 seconds. what is the acceleration of the car?
first we identify the information that we are given in the problem:
v_f = 10 m/sec
v_i = 0 m/sec
time = 20 seconds
then we insert the given information into the acceleration formula:
a=(vf - vi)/t
a=(10 m/sec - 0 m/sec)/20 sec
perform the calculation and express the resulting acceleration value with the appropriate unit:
a = 0.5 m/sec²

Explanation:

Step1: Identify given values

$v_f = 10\ m/sec$, $v_i=0\ m/sec$, $t = 20\ sec$

Step2: Insert values into formula

$a=\frac{v_f - v_i}{t}=\frac{10\ m/sec - 0\ m/sec}{20\ sec}$

Step3: Perform calculation

$a = 0.5\ m/sec^2$

Answer:

$0.5\ m/sec^2$