Question

A plane starts from rest and travels 800m down a runway in 14
seconds. What is the acceleration of the plane?

Answer 1

1. A plane starts from rest and travels 800m down a runway in 14 seconds. What is the acceleration of the plane?

One can find the acceleration: $\boxed{a = \frac{2s}{t^2}}$ .

Let check the dimension:

$$[a] = \frac{m}{s^2}.$$

Let evaluate the quantity:

$$a = \frac{2 \cdot 800}{14^2} = 8.16 \left(\frac{m}{s^2}\right).$$

Answer: 8.16 $\frac{m}{s^2}$.