Question

A jet lands on an aircraft carrier at 140 mi/h ( ).
(a.) What is its acceleration if it stops in 2.0 s?
(b.) What is the displacement of the plane while it is stopping?

Answer 1

a)

$$a=\frac{v}{t}$$ $$a=\frac{63}{2}=31.5\frac{m}{s^2}$$

b)

$$s=0.5at^2$$ $$s=0.5(31.5)(2)^2=63\ m$$