Motion
Speed
Velocity and Acceleration
Acceleration
Examples
100
An object is in ____ if its position changes when compared to another object.
Motion
100
The ____ of an object is the distance the bject moves per unit of time.
Speed
100
The speed at which an object travels in a given direction is called _____.
Velocity
100
What unit do we use for solving acceleration?
m/s^2
100
A snowboarder travels a distance of 50m in 10s. What is the speed of the snowboarder.
5m/s
200
What is the term for "a place or object used for comparison to determine whether something is in motion"?
A reference point
200
What equation do we use to solve for speed. Include units.
Speed (m/s) = distance (meters) / time (seconds)
200
What trick do we use to remember how to rearrange our formulas when solving for velocity, distance, or time?
The triangle method. Cover the letter of what you are trying to solve and it sets up the equation for you.
200
what is the equation we use to solve for acceleration?
(Final - initial velocity) / time
200
What is the speed of a jet plane that travels 528 meters in 4 seconds? include units.
528/4 = 132m/s
300
What is the definition of Force?
a push or pull
300
What is the difference between instantaneous and average speed?
Instantaneous occurs at a particular moment in time
Average speed is an average over a certain amount of time (total distance / total time)
300
Scientist define acceleration as....
the rate at which velocity changes
300
As a plane travels down the runway for takeoff is the plane speeding up or slowing down?
Speeding up
300
A plane traveled for about 2.5 hours at a velocity of 1200km/hr. what distance did it travel in km?
1200 x 2.5 = 3000 km
400
What unnits do we use to measure the stength of a force?
Newtons (N)
400
What equation do we use to solve for speed on a graph?
Slope = Rise / Run
400
A car traveing around a roundabout is an example of speed, velocity or acceleration and why?
An example of acceleration because the velocity is changing. This can include speeding up or slowing down as well as changing direction.
400
What does a negative value for acceleration mean?
An object is slowing down
400
Fred a new driver wants to see how fast his old car will go. While at a stop sign (0 miles/hr =beginning speed), he floors the accelerator. He reaches a speed of 30 miles/hr (final speed) in 10 seconds. What is the cars acceleration?
(30-0)/ 0.0028 hr = 10714 mi/hr2
start by converting seconds into hours (10/ 1200)
500
Forces can be classified as balanced and unbalanced. Based on the force and direction of this example what should this be classfied as?
Balanced
The forces are acting in opposite direction at the same force. This gives a total of zero force where the two would be canceling out.
500
What does Rise and Run represent in Physics?
Distance and Time
500
Acceleration in Racing. Label each image as either increasing decreasing or changing direction.
increasing
changing direction
decreasing
500
What is the relationship between speed, velocity, and acceleration?
Acceleration is the rate at whch the objects velocity changes
Velocity is the speed at which an object travels in a given direction
Speed is the distance/time
500
Emmet the dog always outruns his master. He decides he will slow down to give his master a break.Emmet goes from 20m/s to 14m/s in 3 seconds. What is Emmet's deceleration?
(14m/s - 20m/s) / 3s = -2m/s2