Keep It Movin!
What are the three laws of motion?
Law of Inertia: any object at rest or in motion will continue to do so unless acted upon by an external force.
Law of Acceleration: the acceleration of an object is directly proportional to the force applied and is inversely proportional to its mass.
Law of Interaction: any action would have an equal but opposite reaction.
This is rate it takes for a quantity to displace a 1kg object for 1m at an acceleration of 1m/s/s over one second.
Power (mad/t)
At which medium will sound waves travel fastest; and why?
Solid; due to how densely packed its particles are.
Rank the colors of light from fastest to slowest in a vacuum.
The all move at the same speed.
Differentiate thermal energy, heat, and temperature.
Thermal Energy: the amount of energy possessed by the particles in a specific system.
Heat: the thermal energy in transit due to a difference in temperature.
Temperature: the average kinetic energy of the particles with relevance to certain scales.
A bowling ball and a feather have been dropped at a certain height in a free fall. If we make an argument according to the Law of Inertia, which one should fall first? Why?
The feather, because it has less inertia. This means it would be weak against gravitational pull.
Name the two kinds of energy possessed by an object depending on its movement. Provide the formulas for both kinds.
Potential Energy: PE = mgh
Kinetic Energy: KE = 1/2 mv^2
The minimum distance required to hear a distinct echo 0.1 seconds after producing sounds.
17 meters
List the four main properties of light, along with the actions it does along with each property.
Reflection: bounce back
Absorption: taken in
Refraction: changing speed/bending
Transmission: pass through
Two temperature scales correspond to "absolute zero". What are they?
Kelvin and Rankine
A 75 kg crate is placed on a ramp inclined at 45 degrees. What would be the normal force exerted by the ramp towards the table?
53.03 N
How far will a spring with energy 2,500 J stretch if the spring constant is 16 N/m?
17.68 meters
At which temperature would sound waves travel faster, and why?
Higher temperature, because particles would move faster and create more collisions
Compare the incident angle against the refracted angle when light strikes a basin filled with water.
The incident angle will be larger than the refracted angle.
List all the phase changes involved in an endothermic process. How about for exothermic?
Endothermic: melting, evaporation, sublimation
Exothermic: freezing, condensation, deposition
Jessica is pulling back a drawer with 40 N of force. On the same side, Troy pushes it with a force of 72 N. If the drawer weighs 4.75 kg, how much would it accelerate?
6.74 m/s/s
A box weighing 2.50 kg is pushed to move 68.75 m with an acceleration of 7.25 m/s/s over 45 seconds. How powerful was the push?
27.69 W
Provide the formula for wave period if frequency (f) was not given.
T = 1/(v/λ)
At what speed would light travel in a material with a refracted index of one?
299,792,458 m/s
What are the freezing points of water (0 degrees Celsius) in Fahrenheit, Kelvin, and Rankine scales?
32 degrees Fahrenheit
273.15 Kelvin
491.67 degrees Rankine
A 3.5 kg ball moving at 25 m/s is pushed to accelerate 876 m after one-fourth of a minute. How much force was applied in the push?
7.79 N
A 850 kg truck travels a distance half a kilometer over 12.50 seconds. How much kinetic energy would it possess?
680,000 J
Waves that are 28.75 meters long travels at a speed of 553.15 m/s. How long would it take for one wave to pass?
4.39 seconds
Gamma rays traveling through a vacuum has a frequency of 16.85 kHz. How long would its each wave be?
17,791.84 meters
Suppose that a 4.50 kg object was heated to 76.25 by adding 1,500 J of heat, what would the object’s specific heat capacity be?
4.37 J/kg degrees Celsius