Total work done here against two forces
1. Work done against gravity
2. work done against friction
Here work done against gravity is given by
here we know that weight of the block will be
now we will say
as we know that total work
so work done against friction is 1 J
Let us write down the equation of traveled distance for the uniformly accelerated motion:
In our case
. We assume that plane started accelerating from rest.
We then get this equation:
Now we also know the final velocity of a plane:
We can now solve our problem using those two equations:
When we plug in the number we get
.
In scientific notation, if the exponent of 10 is positive, the number is very very large. In the metric system, very large numbers are expressed in megameters (Mm) or gigameters (Gm). Gigameters is equal to 10⁹ meters. So, in SI prefix, that would be equal to 150 Gm. In kilometers, that would be equal to:
1.5×10¹¹ m * (1 km/1000 m) = 1.5×10⁸ km
A compound machine is one that consists of a couple simple machines working together, like a wheelbarrow contains the lever, axle, and wheel. While a simple machine would just be those individually, or anything else that can be used for applying a force.<span />