Question

You use a 10N force applied for 0.6seconds to get a 0.3kg paper airplane to fly from rest. What is the airplane's final velocity?

Answer 1

Step-by-step explanation:

Impulse is defined as the rate of change of momentum. This is expressed as

Ft = mv - mu = m(v - u)

where

m is the mass of the airplane

F is the force

t is the time in which the force acts

Ft = impulse

v is the final velocity

u is the initial velocity

From the information given,

F = 10

t = 0.6

m = 0,3

u = 0 because it is flying from rest

By substituting these values into the formula,

10 x 0.6 = 0.3(v - 0)

0.3v = 6

v = 6/0.3

v = 20

the airplane's final velocity is 20 m/s