A car with a velocity of 21m/s is accelerated uniformly at arate of 1.6m/s for 6.8s. What is its final velocity?
Vo = 21 m/s.
Vf = Vo + a*t = 21 + 1.6*6.8 = 31.9 m/s.
To find the final velocity of the car, we can use the equation:
final velocity = initial velocity + (acceleration * time)
Given:
Initial velocity (u) = 21 m/s
Acceleration (a) = 1.6 m/s²
Time (t) = 6.8 s
Substituting the values into the equation, we get:
final velocity = 21 m/s + (1.6 m/s² * 6.8 s)
Calculating the expression inside the parentheses first:
1.6 m/s² * 6.8 s = 10.88 m/s
Now, we substitute the value into the equation:
final velocity = 21 m/s + 10.88 m/s = 31.88 m/s
Therefore, the final velocity of the car is 31.88 m/s.