Cards in this guide (22)
What is the resultant acceleration
Acceleration is a vector, meaning each acceleration has both
magnitude and direction. The resultant of vectors is basically the
net acceleration on the object expressed as a single vector. For
example, if there are two vectors each with a magnitude of 2
meters/(seconds squared) acting on an object and these vectors were
placed on the x and y axes then you could represent this system of
2 vectors 90 degrees apart each with a magnitude of two
meters/(seconds squared) as one vector of 45 degrees with a
magnitude of 2 times the square root of 2 meters/(seconds
squared).
What factors determines the strength of the frictional force between two surfaces
how hard the surfaces push to gether the types of surfaces
involved
Which two surfaces would have the highest coefficient of friction
Two vectors which do not lie along the same line represent what kind of motion
A softball and a ping-pong ball are dropped off of a tall building Which statement describes in what order they hit the ground and why
The softball hits the ground first because it is less affected
by air resistance.
Where would a bowling ball and a napkin fall with the same acceleration
In a vacuum chamber. C. On the moon.
Is it bad if you have a heavy period on one month and a light one the next month
No it is not bad, as some ladies have a heavy period for one
month and then a light one or they may have two heavy periods and
then one light one also.
In free fall all objects fall with the same acceleration
yes and that is 9.8m/s2
true
If an object floats the volume of the displaced water is equal to the volume of the whole object
The force needed to overcome kinetic friction is usually less than that needed to overcome static friction true or false
To calculate the density of a substance what two properties do you need to know
On a spinning ride at the fair it is inertia that keeps you moving in a circle
A negative slope on the velocity vs time graph indicates that the object is not accelerating true or false
Watching television with the remote control in your hand which of the following exerts the greatest gravitational force on you
The couch you are sitting on
Lily walked 2 blocks east then 1 block south How would you determine her total displacement
The total displacement will be calculated using Pythagoras
theorem. The distance traveled will form the two sides of the
triangle. Hence we have to calculate the hypotenuse side using the
formula Square root of (2 power 2 + 1 power 2)=Square
root(5)=2.23
Liquids that do not mix form into layers when they have different densities true or false
How were slaves affected by the new republic
Some northern states made slavery against the law.
How long can you car be parked along freeway before towed
Why are some of ancient sport no longer included
i say cause they don't use much technology so they think they
are not very as valuable as other Olympic sports
Which of newtons laws represents the equation Fma
Newton's 2nd law is F=ma.
What is the frictional force needed to slow an object in motion.
True or false an object buoyant force and weight arent the same thing