Scalars/Vectors
What is a vector?
object that has direction and magnitude
The starting point you choose to describe the location, or position of an object.
What is reference point?
The equation used to solve a problem that involves finding time, given the average speed and the distance?
What is t = d/s?
Velocity refers to both speed and what?
Direction
Constant speed on these graphs are shown by what.
A horizontal line
what is a scaler?
quantities that are fully described by a magnitude
What is the difference between "distance" and "displacement?"
Distance is the total amount of ground covered by an object. Displacement is the object's change in position, from starting point to ending point.
It takes a car 20 seconds to travel 1000 meters. How fast, on average, was the car moving?
50 m/s
If a plane travels 1000 km north in 2hrs , what is its' velocity?
500 km north
Graphs that compare distance and time
distance-time graphs
45,000 km Is this quantity a scalar or a vector?
Scalar
Length of a path between two points.
what is distance
If a motorbike is moving at 30 m/s for 10 seconds, how far does it travel?
300 meters
The difference between speed and velocity.
speed is distance divided by time, whereas velocity is speed in a given direction.
Distance-time can calculate this for an object.
What is average speed?
Is Speed a vector or scalar quantity?
Scalar
Juana walks 300 meters West, then 200 meters East. What is her total distance traveled?
500 m
How long would it take for a dog that runs at 4 m/s to travel 28 meters?
7 seconds
Jackie walks 20 meters West, then 20 meters East, and finally 10 meters South. She does this in 20 seconds. What was her speed?
Speed = 2.5 m/s
When the slope line on the distance-time graph increases the object is doing what.
speeding up
How to combine vectors that are going to two different directions?
What is the Pythagorean theorem
Luis walk 20 meters south, 10 meters East, 30 meters North, then 10 meters West. What is the Displacement?
10 m North
The park is located 54 meters from your home. You can run as fast as 6 m/s. How long would it take for you to get to the park from your house is you sprinted?
9 seconds
Belem rides her bike 10 meters West, 10 meters South, 20 meters West, then 10 meters North. She does this in 10 seconds. What is her velocity?
Velocity = 5 m/s West
To calculate average speed on the distance -time graph you use the difference in distance between two points divided by the difference in the same two points for ______________.
time