Physics Basics
Number of significant digits in the number 0.004068.
What is 4?
*Graph on slides* The order of the following events as depicted in the graph below. Assume East is positive.
A - Hobbes has stopped moving
B- Hobbes walks West
C- Hobbes walks East past the starting position
What is C B A?
The amount of work done at 6.0m.
What is 36 J?
In the kinetic energy and gravitational potential energy formulas the unit mass is measured in.
What is kg?
The type of useful energy and useless energy given off by light bulbs.
What is light and thermal energy?
The difference between scalar and vector quatities.
What is scalar is only magnitude and vector includes direction?
A constant speed would look like this on a distance v time graph.
What is a vertical line?
Describe what is happening with the object's motion between seconds 7 and 8.
What is not moving?
You took a walk 3 m N from home then turned around and walked 6 m S. Your displacement is...
What is 3 m S?
A volleyball, bowling ball, ping pong ball, and a marble are rolling down a slope. The ball with the greatest kinetic energy.
What is the bowling ball?
50 km/h in m/s.
What is every action has an opposite and equal reaction?
The graph below shows the motion of two cars.
How does the motion of the two cars compare?
a) car 1 is slowing down and car 2 is speeding up
b) car 1 is not moving and car 2 is maintaining a constant speed
c) car 1 is maintaining a constant speed and car 2 is speeding up
d) car 1 is speeding up and car is maintaining a constant speed
What is C?
Matilda did 583 J of work on a box of books while carrying it a vertical distance of 3.3 m up a flight of stairs.The mass of the box of books is.
What is 18 kg?
In the Olympics, the official mass of a woman’s discus is 1.0 kg and can be thrown with a release speed of 27.044 m/s. The initial kinetic energy upon release is.
What is 366 J?
The value 235987 written in 3 significant figures.
What is 2.36 x 105?
Below is a graph displaying the speed of a car. Which best describes the time the driver applied the brakes to the car?
What is 20 seconds?
The formula Ek=1/2 x mv2 rearranged to solve for v
What is v=√2Ekm?
Name the input energy, useful output energy, and useless output energy of a microwave.
What is
electrical
thermal / mechanical
sound / light
B = (A2 - C) /D
What is A = √BD+C
Determine the speed of the following object by finding the slope of the line.
What is 2.5 m/s?
A helicopter requires 1500 J of energy to do 250 J of work. What is the efficency?
What is 16.7%?