Speed and velocity
What is the difference between speed and velocity
velocity includes direction
What is displacement
how far away the object is compared to its original position
On a distance vs time graph what axis is distance
y axis
the rise is 400 meters and the run is 2 minutes, find speed
200 meters per minute.
A car travels 1300 km in 12 hours. What is the average speed of the car (in km/hr)?
108.3km/hour
Is velocity more like distance or
displacement? Why?
displacement bc it includes direction
What is acceleration
Acceleration is the rate at which velocity
changes.
what is shown on a distance vs time graph
speed
If a car is traveling in a circle in a constant speed is the velocity changing?
yes
How do you know if something is in motion, what do you use as a reference
An object is in motion if it changes
position relative to a reference point.
Objects that we call stationary—such as a
tree, a sign, or a building—make good
reference points.
A rocket is launched from the launch pad at a speed of 1200 km/hr. How far will the rocket have traveled after 4.0 hours?
4800km
How can acceleration change
Acceleration can result from a change in
speed (increase or decrease), a change
in direction (back, forth, up, down left,
right), or changes in both.
How is the instantaneous speed calculated on a distance vs time graph
slope
How are speed and velocity similar?
they are both a rate of how fast something is moving
What is
instantaneous
speed?
Instantaneous
speed is the
velocity of an
object at a
certain time.
A bird flies at a speed of 7 m/s. It flies for 3160 seconds from its nest to the field. How much distance did the bird cover?
22,120 meters
As a roller-coaster car starts down a slope, its
speed is 4 m/s. But 3 seconds later, at the
bottom, its speed is 22 m/s. What is its
average acceleration?
6m/s2
The steeper the slope is, the ______the
speed.
greater
What is the equation for speed
distance/ time
What is the velocity of a plane that traveled 7000 km west from New York to California in 12 hours?
583.3km/hour
When an object moves, it goes from point
A to point B –
distance
A roller coaster is moving at 25 m/s at the
bottom of a hill. Three seconds later it reaches
the top of the hill moving at 10 m/s. What was
the acceleration of the coaster?
-5m/s2
A ______slope represents motion at
constant speed.
constant
What is the equation for slope
rise/run