Starting at a speed of 55 km/h, my minivan accelerates to 30 km/h in 6 seconds. What is its acceleration?

Question

triciaal · Answer

acceleration is the change in velocity with time

anonymous · Answer

so the change in velocity would be 35 km/h?

triciaal · Answer

now  - start   =

anonymous · Answer

30-55= -85 ?

triciaal · Answer

he is actually braking in real life

anonymous · Answer

im still kind of confused

triciaal · Answer

look at the original do you have the numbers switched? 
how can you accelerate with a lower speed?

anonymous · Answer

so would the final answer be -14.167 km/h/secs ?

triciaal · Answer

acceleration is the change per unit time 
change is km/h means km/60*60 sec because 60 sec = 1 min and 60 min = 1 hr  and the time was 6 sec

triciaal · Answer

unit of measure for acceleration is m/sec^2
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