The first ariplanr was made December 17, 1903
According to newton's law Force = mass * acceleration
so , 100 = 50 * a
so , a= 2 m/s^2
A leaf is organic matter because organic matter refers to anything from something living. because a leaf is living or was at one point it is organic matter
The answer is 5. To find the advantage you just divide 20 by 4.