George is pushing a box horizontally on the floor. The box has a mass of 10 kg and as a

Physics

1 answer:

Anni [7]2 years ago

8 0

Answer:

20 N

Explanation:

The relevant formula is ...

F = ma . . . . m = mass, a = acceleration

F = (10 kg)(2 m/s²) = 20 kg·m/s² = 20 N

George is applying force of 20 N.

_____

<em>Additional comment</em>

In 2 m/s², m is used to stand for the unit 'meters'. It should not be confused with the formula m, which stands for mass.

You might be interested in

The height of the Empire State Building is 318.00 meters. If a stone is dropped from the top of the building, what is the stone'

Helen [10]

We can use 3rd equation of motion to find the velocity of the stone just before it strikes the ground.

Height = S = 318 meters
Acceleration = a= 9.8 m/s²
Initial velocity = u = 0
Final velocity = v = ?

According to the 3rd equation of motion:

2aS = v² - u²

2(9.8)(318)=v²

v²=6232.8

⇒

v = 78.95 m/s

So, the velocity rounded of to nearest integer will be 79 meters per second.

Thus, C option is the correct answer

5 0

3 years ago

What is the magnitude of the Box's Acceleration?

mojhsa [17]

The Box's Acceleration : g sin θ

<h3>Further explanation </h3>

Newton's 2nd law explains that the acceleration produced by the resultant force on an object is proportional and in line with the resultant force and inversely proportional to the mass of the object

∑F = m. a

F = force, N

m = mass = kg

a = acceleration due to gravity, m / s²

We plot the forces acting on the block (picture attached) according to the y-axis and the x-axis.

Because the motion of the block is in the same direction as the x-axis, ignoring the friction force with the inclined plane, then

$\tt \sum F_x=m.a\\\\W.sin\theta=m.a\\\\mgsin\theta=m.a\\\\a=gsin\thet\theta$