Terms
Which choice below is not a current vocabulary term?
a) Velocity
b) Direction
c) Speed
d) Criteria
b) Direction
Acceleration is the rate of change of
a) An object's speed
b) An object's direction
c) An object's velocity
d) Two object's difference in speed to each other
b) An object's velocity
What is the SPEED of an object that moves 25 meters in 25 seconds?
1 m/s
What is the SPEED of an object that travels 450 meters in 45 seconds?
10 m/s
What is the units we typically use to describe acceleration?
m/s2
Which of the choices below is the definition of position?
a) An object's speed and direction of motion
b) The rate of change of an object's velocity over time
c) An object or place you use to describe the locations of other objects
d) The distance and direction that an object is from a reference point.
d) The distance and direction that an object is from a reference point.
***DAILY DOUBLE***
Which of the following is an example of velocity?
a) A bus moving at a speed of 25 m/s
b) A car slowing down as it catches up to traffic
c) a plane landing at an airport
d) a boat moving north at a speed of 8 m/s
d) a boat moving north at a speed of 8 m/s
Calculate the ACCELERATION of the object if it slows from 19 m/s to 5 m/s in 7 seconds.
2 m/s2
What is the VELOCITY of an object that moves from 125 m to 5 m in 12 seconds.
-20 m/s
When given a number line, where is your reference point?
At 0
Which of these definitions is correct for acceleration?
a) An object's speed and direction of motion.
b) Limitations on an engineering solution.
c) The rate of change of an object's velocity
d) An amount of something measured per unit of something else.
c) The rate of change of an object's velocity.
Which of the choices below is not a formula we discussed in class?
a) distance / time
b) (End position - start position) / time
c) direction / distance
d) (End velocity - start velocity) / time
c) direction / distance
What is the VELOCITY of an object that is moving backwards from 10 m to -25 m. It took 10 seconds.
-3.5 m/s
What is the VELOCITY of an object that moves -96 m in 3 seconds.
-32 m/s
What is the specific name of the type of acceleration that involves slowing down?
deceleration
Which of these below is the correct definition of rate?
a) A point of view on the speed and direction that objects are moving.
b) The requirements that must be met.
c) The position and direction that an object is from a reference point.
d) An amount of something measured per unit of something else.
d) An amount of something measured per unit of something else.
Speed is also the ________________ of the object's _______________.
a) Opposite; velocity
b) Opposite; acceleration
c) Absolute Value; acceleration
d) Absolute Value; velocity
d) Absolute Value; velocity
An object at rest speeds up to 45 m/s in 9 seconds, what is its ACCELERATION?
5 m/s2
What is the ACCELERATION of an object that starts from rest and then speeds up to 51 m/s in 17 seconds?
3 m/s2
Person A and Person B are playing catch, and Person A throws the ball to Person B. Name 1 reference frame AND describe the actions of the ball for each one.
RF 1: Person A's POV. Ball is moving towards Person B and away from you.
RF 2: Person B's POV. Ball is moving towards you, and away from Person A.
What is the correct definition for reference frame?
a) An object or place used to describe the locations of other objects.
b) A point of view on the speed and direction that objects are moving.
c) The rate that describes how far an object moves over time.
d) Limitations on an engineering solution.
b) A point of view on the speed and direction that objects are moving.
Which of the following would NOT prompt a change in acceleration?
a) Running around a circular track at a constant speed.
b) A dragster speeding up along a drag strip.
c) Walking in a straight path at a constant speed
d) A car coming to a stop at a red light.
a) Running around a circular track at a constant speed.
A car moves backwards at a constant rate from the garage to the street. The street is 30 meters from the garage. It took them 5 seconds to back out of their driveway. What is your AVERAGE VELOCITY?
-6 m/s
A tractor is moving towards the house and stops in front of the building. It was going at a speed of 6.5 m/s and it took 2 seconds to stop. What is its ACCELERATION?
-3.25 m/s2
Which of the following was NOT a criterion for the dragster from the textbook?
a) Accelerate quickly
b) Easily controlled
c) Can carry a driver
d) Have a twin engine
d) Have a twin engine