COLUMN 1
Convert 6 721 millimeters to meters.
6.721
It refers to the ratio of absolute error of the measurement and the actual value?
Relative error
What is 0.000 345 written in scientific notation?
3.45 x 10ˉ⁴
Transform this scientific notation in standard notation 2.5 x 10ˉ⁴.
0.00025
Transform this scientific notation in standard notation 6.455 x 10⁴.
64, 550
Ixia forgot to calibrate her analytical balance before she measured the mass of her reactants in a chemistry experiment. She committed 78% percentage error in her measurement. What type of measurement error did she commit?
systematic error
It is the most common way to characterize the spread of a data set?
Standard Deviation
It refers to error affects the accuracy of a measurement, or how close the observed value is to the true value.
Systematic error
In a coordinate system, a vector is oriented at angle with respect to the x-axis. The x component of the vector equals the vector’s magnitude multiplied by what trigonometric function?
cos θ
Acceleration is negative if speed is ____.
decreasing
The area under a velocity graph represents the ____________ of the object.
Displacement
The area under an acceleration graph represents the ______________ of the object
Change in Velocity
When we say that light objects and heavy objects fall at the same rate, what assumption(s) are we making?
They are falling in a vacuum.
The maximum horizontal distance travelled by the object in projectile motion is called?
Range
On a velocity-time graph slope equals to _______________ of the object.
Acceleration
What is the path of a projectile motion?
parabolic path
How to add vectors graphically?
put them tip to tail
What is a vector?
a quantity that has both magnitude and direction.
A particular hurricane travels 678 km, 34.60 north of west before turning into a tropical storm. Find the northern displacement of the typhoon.
385 km North
A particular hurricane travels 678 km, 34.60 north of west before turning into a tropical storm. Find the western displacement of the typhoon.
558 km West
A ball is fired from a launcher with an initial velocity of 40m/s at an angle of 20° to the horizontal. Find the range.
105 m
A ball is projected with initial velocity of 25m/s at an angle of 45 degree. Calculate the time of flight.
3.61 s
Give an example of a projectile?
A ball shoot in three points.
A ball dropped at the top of the hill.
An egg drops at the edge of the table.
A ball is projected with initial velocity of 25m/s at an angle of 45 degree. Calculate for the range.
63.78 m
A ball is fired from a launcher with an initial velocity of 40m/s at an angle of 20° to the horizontal. Find the time of flight.
2.79s