A(n) __________ is a series of images of a moving object that records its position after equal time intervals.
The vector that represents the sum of two or more vectors is called the __________.
In the particle model, the __________ of the object are (is) ignored.
The length of the position vector on a motion diagram is proportional to the __________.
|A)||distance of the object from the origin|
|B)||distance of the object from the vertical intercept|
A motion diagram is a series of images of a moving object that records its position after __________.
|B)||equal time intervals|
|C)||it comes to rest|
The __________ is the point at which all variables in a coordinate system have zero magnitude.
Which of the following correctly describes the displacement of an object that moves from position di to df?
|A)||Δd = df - di|
|B)||v = Δd/Δt|
|C)||Δdf = di - df|
|D)||Δd = df + di|
Which of the following is not a scalar quantity?
|B)||150 km southwest|
|D)||2 hours 27 minutes|
To subtract two vectors, __________.
|A)||reverse the direction of the second vector and then add them|
|B)||use the equation R2 = A2 - B2|
|C)||use the same process as for adding them, then change the sign of the final value|
|D)||subtract 180° from θ, then use the Law of Cosines|
Displacement is a change in __________.
The magnitude of a vector is always __________.
|A)||a positive quantity|
|B)||equal to the direction|
|C)||equal to the displacement|
|D)||a negative quantity|
When an object is in motion, its __________ must change.
Two displacements are equal when __________.
|A)||the two magnitudes and directions are the same|
|B)||the two directions are the same|
|C)||they end at the same point|
|D)||they begin at the same point|
The difference between ti and tf is the __________.
To calculate the distance traveled continuously in a straight line, __________.
|A)||divide the distance traveled by the time needed to travel the distance|
|B)||subtract the cosine of the angle between the starting and finishing positions from the square of the distance traveled|
|C)||divide the change in velocity by the time over which the change occurs|
|D)||subtract starting position from final position.|
A(n) __________ tells you where the zero point of the variable you are studying is located and the direction in which the values increase.
On a position-time graph, run = __________.
On a position-time graph, rise = __________.
You and a friend leave school at the same time. You drive at a constant 5.5x10^1 km/h and your friend drives 7.0×10^1 km/h. How long does it take each car to reach a mall that is 25 km from the school?
|A)||you: 1 hour 40 minutes, your friend 36 minutes|
|B)||you: 2.2 hours, your friend: 2.8 hours|
|C)||you: 27 minutes, your friend: 21 minutes|
|D)||you: 21 minutes, your friend: 27 minutes|
You drive a car for 2.0 h at 60 km/h, then for another 3.0 h at 85 km/h. What is your average velocity?
The slope of the line tangent to the curve on a position-time graph at a specific time is the __________.
Extrapolating from the graph below, where would the object be at t = 7 s?
|C)||- 7 meters|
|D)||- 10 meters|
The __________ is the ratio of the total distance traveled to the time interval.
Based on the graph below, what is the object's velocity at t = 4 s?
Which of the following equations can be used to find the position of an object moving at constant velocity?
|A)||d = df - vt|
|B)||Δd = df - di|
|C)||df = di + vt|
|D)||tan θ = Ry/Rx|