Which of the following is a unit of temperature?
celsius degree
joule (my choice)
kilogram
calorie
My first choice is joules and then maybe celsius but not real sure. Can someone please help?
My other question is using newtons second law of motion if the force on an object is 20N, and it's mass is 5g, what is it's acceleration?
I need to show the work and I'm getting confused.
accelerarion=force/mass or a=f/m
a=20N/5g
now I'm not sure how to write it from here to get the answer 4m/s^2, which I got from 20/5=4.
Not sure how to get mass into kilograms
1.
celsius degree
2. a=20N/0.005 = 4000 m/s^2
The correct unit of temperature listed in your options is "celsius degree." Joule and kilogram are units of energy and mass, respectively, while calorie is a unit of heat.
To solve your second question using Newton's second law of motion, you correctly identified the formula as "a = F/m" or "acceleration = force/mass."
To proceed with the calculation, you should ensure that the units for force and mass are consistent. In this case, the force is given as 20N (Newtons), and the mass is given as 5g (grams).
However, it's important to note that for accurate calculations, it is necessary to use consistent units within the equation. Since 1N = 1 kg * m/s^2 and 1g = 0.001 kg, we need to convert the mass unit from grams to kilograms.
So, the mass becomes 5g * (0.001 kg / 1g) = 0.005 kg.
Now, substitute the values into the equation:
a = F/m = 20N / 0.005kg.
The calculation would be:
a = 20N / 0.005kg = 4,000 N/kg = 4,000 m/s^2.
Therefore, the acceleration of the object is 4,000 m/s^2.