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
:)
(change in speed) / time
:)
well
(change in speed) / (change in time)
:)
(change in speed) / (change in time)
:)
well...
the "car starts from rest" ... zero speed and time
...hair splitting not needed
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.
8.4 = 0+a*5.9.
a = 1.42 m/s^2.