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science notes

QuestionAnswer
How can you describe the motion of runners in a race? You would need distance, time, and direction.
What occurs when an object changes its position relative to a reference point? motion
How far an object moves is? distance
The SI unit for length or distance is the ______. meter
Large distances are measured using _______ and small lengths are measured using ______ or _________. kilometers, meters, centimeters
Any change over time is called _____. rate
The SI unit for _____ is the meter and the SI unit for ______ is the second. distance, time
The speed that you are going at any specific moment is called _______ speed. instantaneous
If an object is moving wtih ______ speed, the instantaneous speed doesn't change. constant
_____ includes the _____ of an object and the direction of its motion. velocity, speed
What is acceleration? Is the rate of change of velocity.
What are three ways an object can accelerate? speed up, slow down, change direction
True or False: Acceleration, like velocity, had direction? true
Describe positive acceleration? If the acceleration is in the same direction as the velocity, the speed increases and the acceleration is positive.
Describe negative acceleration? If the speed decreases, the acceleration is in the opposite direction from the velocity, and the acceleration is negative.
A change in velocity can be either a change in how fast something is moving or a change in the _______ of movement? direction
Any time a moving object changes direction, its _____ changes and its accelerating? velocity
Created by: Dev153
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