14975627
Beschreibung
Quiz von Jeffrey Piggott, aktualisiert more than 1 year ago
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Erstellt von Jeffrey Piggott
vor etwa 6 Jahre
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Frage 1
Frage
A tractor is moving in a straight line, in a direction we shall define as x. Its Position versus Time graph is shown by the graph at the left:
Antworten
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A
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B
Frage 2
Frage
A tractor is moving in a straight line, in a direction we shall define as x. Its Position versus Time graph is shown by the graph at the left:
(a) What is the position of the tractor, in meters, at 2.0 seconds? [blank_start]Answer[blank_end]
(b) What is the slope of the line in the graph above, in m/s? Give your answer in decimal form. [blank_start]Answer[blank_end]
Antworten
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0.8
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0.3
Frage 3
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Suppose a second tractor is also moving in the x-direction, but at a higher speed. How would the Position versus Time graph of the second tractor be different to the one shown?
Antworten
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The slope would be smaller.
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The slope would be greater.
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The intercept would be smaller.
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The intercept would be larger.
Frage 4
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Which of the following are vector quantities? Select two.
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Velocity
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Speed
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Acceleration
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Distance
Frage 5
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If a car moves with constant acceleration, is it possible for the car’s velocity to change direction?
Antworten
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Yes, this is possible if the car starts from rest, speeds up, slows to a stop, and then backs up.
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Yes, this is possible if the car is moving up and down a ramp, for example.
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No, this is not possible because the car is always speeding up.
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No, this is not possible because the car is either always speeding up or always slowing down.
Frage 6
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If a car’s initial velocity is zero and acceleration is negative, which of the following best describes the motion of the car?
Antworten
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The car speeds up with a velocity in the negative direction.
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The car slows down.
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The car remains at rest.
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The car speeds up from rest.
Frage 7
Frage
When acceleration and velocity vectors are pointing in opposite directions, the object is:
Antworten
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moving at constant speed.
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not moving.
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speeding up.
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slowing down.
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