An automobile uniformly accelerates from rest at 15 ft/s2 for 6s. What is the fanal velocity in ft/s?
v=d/t
15 *6= 90
90ft/s
V = a*t = 15 * 6 = 90 Ft/s.
To calculate the final velocity of the automobile, we can use the formula:
v = u + at
where:
v = final velocity
u = initial velocity (which is 0 since the automobile starts from rest)
a = acceleration
t = time
Given that the acceleration is 15 ft/s^2 and the time is 6 seconds, we can substitute these values into the formula:
v = 0 + (15 ft/s^2)(6 s)
v = 0 + 90 ft/s
v = 90 ft/s
Therefore, the final velocity of the automobile is 90 ft/s.