A car is at velocity of 20 km/h. If the car traveled 120 km in 3 hours at constant acceleration, what is its final velocity?
lnkj
20km/h x 3hours = 60km/h
To find the final velocity of the car, we can use the equation:
Final velocity = Initial velocity + (acceleration * time)
In this case, the car has traveled 120 km in 3 hours, which means the average velocity is 40 km/h (120 km / 3 hours).
Now, we need to find the acceleration. We know the initial velocity is 20 km/h, and the time is 3 hours, so:
Average velocity = (Initial velocity + Final velocity) / 2
40 km/h = (20 km/h + Final velocity) / 2
Multiplying both sides by 2, we get:
80 km/h = 20 km/h + Final velocity
Subtracting 20 km/h from both sides, we have:
60 km/h = Final velocity
So, the final velocity of the car is 60 km/h.