A car starts from rest and reaches a speed of 8.4 m/s in 5.9 seconds. What is its acceleration?

6 answers

speed / time
well
(change in speed) / time
:)
well
(change in speed) / (change in time)
:)
well...
the "car starts from rest" ... zero speed and time
...hair splitting not needed
there is always a time interval. It just happens that its initial value is zero.
V = Vo+a*T
8.4 = 0+a*5.9.
a = 1.42 m/s^2.