Answer:
The box will move to the right with increasing speed
Explanation:
According to Newton's second law:
(1)
where
F is the net force on an object
m is the mass of the object
a is its acceleration
For the box in this problem, there is only one force acting on it: a force of 5 N from the left (so, to the right). This means that according to (1) the box will experience an acceleration: the direction of the acceleration is the same as the direction of the net force (so, to the right), therefore the box will move to the right and its speed will continue increasing due to fact that it is being accelerated.
Answer:
Explanation:
By conservation of energy, the sum of the kinetic and gravitational potential energies at the surface of the Earth must be equal than their sum at infinity, so we have:
Where is the gravitational constant, and are the mass and radius of the Earth, <em>m </em>is the mass of the particle, its velocity at the surface of the Earth (which would be its escape velocity) and and are the velocities and distance at infinity, which would be null and infinity respectively, so the right hand side of our equation is 0J, which leaves us with:
Also, since the force the molecule experiments is the force of gravity (disregarding drag), we can write its weight in terms of Newton's Law of Gravitation:
Which means that:
So finally putting all together we can write:
Answer:
20 m/s
Explanation:
The acceleration of an object determines the increase in velocity per second.
In this case the acceleration is 20m/s^2.
That is, the increase is 20m/s each second.
I hope this is useful for you
Regards
Answer:
168 200 15 1.3 2.3 5.4 6.5 67 percent positive that it is 1117