A Moving Object Does Not Necessarily Have

Question: The motion of an object look different to observers in different
Answer: frames of reference
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Question: The SI unit for measuring ____________ is the meter.
Answer: distance
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Question: The direction and length of a straight line from the starting point to the end point of an object's motion is
Answer: displacement
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Question: Displacement and velocity are examples of _________ because they have both magnitude and direction.
Answer: vectors
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Question: The sum of two or more vectors is called the
Answer: resultant vector
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Question: Speed is measured in units of
Answer: m/sec
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Question: A car's speedometer measures
Answer: instantaneous speed
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Question: average velocity = d/t is the equation that defines
Answer: average speed
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Question: A constant slope on a distance-time graph indicates ___________ speed.
Answer: constant
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Question: The difference between speed and velocity is that velocity indicates the ____________ of motion and speed does not.
Answer: direction
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Question: A distance-time graph indicates an object moving 20 km in 2 hours. The average speed of the object is ___ km/h.
Answer: 10
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Question: Because its ____________ is always changing, an object moving in a circular path experiences a constant change in velocity.
Answer: direction
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Question: Two or more velocities add by
Answer: vector addition
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Question: A moving object does not ______________ if its velocity remains constant.
Answer: accelerate
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Question: Freely falling objects accelerate at 9.8 m/s² because the force of ______ acts on them.
Answer: gravity
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Question: The velocity of an object moving in a straight line changes at a constant rate when the object is experiencing constant ________________
Answer: acceleration
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Question: The acceleration of a moving object is calculated by dividing the change in _________ or ____________ by the time over which the change occurs.
Answer: speed or velocity
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Question: Accelerated motion is represented by a(an) _________ line on a distance-time graph.
Answer: curved
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Question: A car that increases its speed from 20 km/h to 100 km/h undergoes ___________ acceleration.
Answer: positive
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Question: __________________ _______________ is how fast a velocity is changing at a specific instant.
Answer: Instantaneous acceleration
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