What Hadad can do is be determined or persistent in interconnecting with the doctor in numerous visits for the reason that sometimes a doctor doesn't see all the indications or a fundamental issue in the first visit. He must go see the doctor few times maybe there are a series of test to do to know what is happening to Hadad.
Answer:
I think it's dio to atmospheric pressure.
The truck has more inertia, it is bigger/heavier so it would take a lot more force to get it to change its speed/direction
You're saying that it is the same thing to add or subtract B. This means that B must be the zero vector.
This works with numbers as well, if you feel more familiar to think it this way: in general, if you add something to a number you make it bigger, whereas if you subtract it, you make it smaller.
The only way to cause adding and subtracting to be the same thing is to add or subtract zero: in both cases, you're doing nothing.
1) The mass has the same value before and after the impact (We will neglect the microscopic effects in which there may be a minimum molecular loss of the material) so the equation will be
If we put the mass in one side of the expression (or just cancel directly) we have that
2) We must clear from the equation previously found the number two that is dividing the expression (It would go to the other side of the equation to multiply) and the exponent that would pass to the other of the expression as root therefore
3) We must simply replace the given values, the height is 3.67m and the gravity on the ground is therefore