For an investigation, a student measures the speed of a cart as it rolls down a ramp. The student then records data in the table
shown above. Which of these best explains the student’s data?
A.
The speed of the cart decreases as the cart rolls down the ramp because of friction between the cart and the ramp.
B.
The speed of the cart increases as the cart rolls down the ramp because the force acting on the cart is greater than the force of gravity.
C.
The speed of the cart increases as the cart rolls down the ramp because the forces acting on the cart are unbalanced.
D.
The speed of the cart decreases as the cart rolls down the ramp because the forces acting on the cart are balanced.
A.
The speed of the cart decreases as the cart rolls down the ramp because of friction between the cart and the ramp.
B.
The speed of the cart increases as the cart rolls down the ramp because the force acting on the cart is greater than the force of gravity.
C.
The speed of the cart increases as the cart rolls down the ramp because the forces acting on the cart are unbalanced.
D.
The speed of the cart decreases as the cart rolls down the ramp because the forces acting on the cart are balanced.
2 answers:
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Answer:
Option C
Explanation:
Given that
Motor force is 250 N
Force of friction is 750 N
Weight is 8500 N
And, the normal force is 8500 N
Now based on the above information
Here length of the rector shows the relative magnitude forward force i.e. 250 N i..e lower than the frictional force i.e. backward and weight i.e. 8500 would be equivalent to the normal force
The light can definitely change the mystery material. This can occur through a change in temperature or color (option C).
A material is affected by light mainly if the material absorbs the light. Based on the chart, we know this mystery material can absorb two types of light:
- Red light.
- Yellow light.
Moreover, this phenomenon can lead to two main changes:
- Change in temperature: Light affects materials by increasing their temperature of these. A common example is the way the temperature of an object increases if it is exposed to sunlight.
- Change in color: Some materials react to light by changing their color.
Based on this, the material can change its color or temperature.
Note: This question is incomplete; here is the missing part:
A. Yes, but the mystery material can change in only one way, such as by getting warm, because all the light that a material absorbs will affect that material in the same way.
B. No. The mystery material can’t change because the light is not a physical thing. Light cannot change physical things like the mystery material.
C. Yes and the mystery material can change in one or two different ways, such as by getting warm and/or changing color, because different types of light can cause different changes to a material when they are absorbed.
D. There is no way to know whether the mystery material will change or not.
Learn more about sunlight in: brainly.com/question/1603783
Answer:
The maximum amount of meat that the butcher can sell is
Explanation:
The maximum amount can be found by taking the difference of mixed numbers.
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