A drag racer deploys a parachute and slows down from 130m/s to 45 m/s in 3.0s. What is the acceleration of the racer?
To find the acceleration of the racer, we can use the equation for acceleration:
acceleration = (final velocity - initial velocity) / time
In this case, the initial velocity (v0) is 130 m/s, the final velocity (v) is 45 m/s, and the time (t) is 3.0 s.
Plugging the values into the equation, we get:
acceleration = (45 m/s - 130 m/s) / 3.0 s
Subtracting the velocities gives us:
acceleration = (-85 m/s) / 3.0 s
Finally, dividing -85 m/s by 3.0 s gives us the acceleration:
acceleration = -28.3 m/s^2
Therefore, the acceleration of the racer is -28.3 m/s^2.
because they can..?
A drag racer deploys a parachute and slows down from 130m/s to 45 m/s in 3.0s. What is the acceleration of the racer?
acceleration = change in velocity / change in time
= ( 45 -130) m/s / 3 s = - 85/3 = -28.3 m/s^2
a = ∆v/∆t = (45-130)/(3-0) = -28.3 m/s^2
not sure why you felt compelled to ask it twice ...