The option second -4.9 m/s² is correct the negative sign shows that a positive direction "upward along the ramp".
<h3>What is mass?</h3>
A tangible body's mass is the amount of matter it possesses. It's also a metric of inertial, or the resistance to velocity when a net force is exerted.
The question is incomplete.
The complete question is:
A box that has a mass of 80 kg slides down a ramp with a 30-degree angle. The free-body diagram shows the forces acting on the box. Ignoring friction and air resistance, what is the acceleration of the box, to the nearest tenth?
-0.5 m/s²
-4.9 m/s²
-8.5 m/s²
-9.8 m/s²
First we calculate the weight:
W = mg = 80×9.8
W = 784 N
The weight component parallel to the ramp is:
W₁ = Wsin30
W₁ = (784)(sin30)
W₁ = 392 N
From the Newton's second law:
a = F/m
a = 392/80
a = 4.9 m/s²
Thus, the option second -4.9 m/s² is correct the negative sign shows that a positive direction "upward along the ramp".
Learn more about the mass here:
brainly.com/question/15959704
#SPJ1
Answer: y=3x+3 would be your answer
For this case we have the following system of equations:
To solve, we substitute the second equation in the first:
We apply distributive property to the terms within parentheses:
Equality is met, so for any value of x it will be fulfilled. Therefore, the system of equations has infinite solutions.
Answer:
Infinite solutions
To find the slope
(2y-1y)/(2x-1x) or the change over y divide by the change in x. Or the rise over run.
Put it into an equation once and if the gradient is 2 you go up by 2 and down by 1. If the gradient is 3/2 go up by 3 and down by 2.
You can solve them ! Its a homework for a reason
By measuring how much net you need to cover the prism.
