An object with a constant pushing or pulling force is exerted on it is greater than the frictional force, than A. The object will accelerate.
The answer is <span>atmospheric layer</span>
9.8ms^-2 as it is being pulled back down by gravity
The efficiency of the bicycle is 20% because 200 out 100 is 2.and ,convert 1000 j out 100 that equal to 10 but,then multiply 2×10 that equal to 20%