Question

An airplane, starting from rest, moves down the runway at constant acceleration for 18 s and then takes off at a speed of 60 m/s. What is the average acceleration of the plane?

a) 3.33 m/s²
b) 5.0 m/s²
c) 6.67 m/s²
d) 10.0 m/s²

Answer 1

The average acceleration of the airplane is calculated using the formula for constant acceleration (a = (v - u) / t), which gives us an acceleration of 3.33 m/s².

Step-by-step explanation:

To calculate the average acceleration of the airplane, we can use the formula for constant acceleration:

a = (v - u) / t

Where:

a is the acceleration

v is the final velocity (60 m/s)

u is the initial velocity (0 m/s, since it starts from rest)

t is the time (18 s)

Plugging in the values we get:

a = (60 m/s - 0 m/s) / 18 s

a = 60 m/s / 18 s = 3.33 m/s²

Therefore, the average acceleration of the plane is 3.33 m/s², which correlates to option (a).