an aircraft dececelerates at 0.5 m/s .after 8 min its velocity to 160m/s.find initial velocity.
good
A
v - 8*60 * 0.5 = 160
U=400m/s
U= -80M/S
U=-80m/s
To find the initial velocity of the aircraft, we can use the equation of motion:
v = u + at
where:
v = final velocity (160 m/s)
u = initial velocity
a = acceleration (-0.5 m/s^2, as the aircraft is decelerating)
t = time (8 min = 8 * 60 s = 480 s)
We need to convert the time from minutes to seconds before plugging the values into the equation.
Rearranging the equation, we have:
u = v - at
Now let's substitute the given values:
u = 160 m/s - (-0.5 m/s^2) * 480 s
Simplifying further:
u = 160 m/s + 240 m/s
u = 400 m/s
Therefore, the initial velocity of the aircraft is 400 m/s.