A car is moving east at 35 m/s. If it accelerates at 20 m/s² for a period of 22 seconds, what is its final velocity?
Answer (2)
a cce l er a t i o n = t im e v e l oc i t y f ina l − v e l oc i t y ini t ia l 20 s 2 m = 22 s v e l oc i t y f ina l − 35 s m ∣ ∗ 22 s 440 s m = v e l oc i t y f ina l − 35 s m ∣ A dd 35 s m v e l oc i t y f ina l = 475 s m
The final velocity of the car after accelerating for 22 seconds at 20 m/s², starting from an initial velocity of 35 m/s, is 475 m/s. This is calculated by using the relation between acceleration, initial velocity, and time. Thus, the car speeds up significantly over the period.
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