- 1 Translational motion
- 2 Force, motion, gravity
- 3 Equilibrium, momentum
- 4 Work and energy
- 5 Waves, periodicity
- 6 Sound
- 7 Fluids and solids
- 8 Electricity, magnetism
- 9 Electronic circuits
- 10 Light, optics
- 11 Atoms, nuclei
What is physics?
The first question that comes to my mind is “what exactly is physics?”
Physics is a natural science involved in the study of matter and its motion through spacetime.
The 4-step process to solve a physics problem
“Before we get started, Miley, I want to cover a 4-step process in which you can solve a physics problem.”
“The reason is, you should use this technique, NOT the ‘sit and stare’ technique, where hopefully you can look at a question and the answer just POPS out at you HA!”
The 4 steps to solve a physics problem are:
- Draw a well labelled diagram
- Focus on the free body you are interested in
- Find the formula given the variables you have
- Plug ‘n chug, calculating the answer
For instance, what is the weight of you Miley?
Step 1: here is an artistic impression of Miley in a scene, i.e.:
“Pretty snazzy, showing off you and Mandy have five fingers, haha,” Joe laughed.
“No it’s our hand bags that are awesome,” Miley commented.
Step 2: Next, we focus on the free-body we’re interested in, which is you Miley, i.e.:
“Hey guys,” Miley started, “you blurred out Mandy!”
“That’s the point Miley,” Demi responded, “we focus in on you “
Step 3: Find the formula given the variables we have.
Now we know Miley is 104 pounds = 47 kilograms, meaning that .
We also know acceleration due to gravity on earth is , meaning .
We can therefore find force by the formula .
Step 4: We then plug ‘n chug, so . Therefore, , rounding off.
“Always use the above 4-step method Miley,” said Joe, “never just do nothing in a test!”
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