Momentum & Impulse Fastcheck 2

Quiz by Charlotte Wiggins

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20 questions
• Q1
Momentum is a vector quantity.
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False
True
30s
• Q2
The standard unit on momentum is the Joule.
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False
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True
30s
• Q3
An object which is moving at a constant speed has momentum.
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True
False
30s
• Q4
An object can be traveling eastward and slowing down; its momentum is westward.
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True
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False
30s
• Q5
The momentum of an object varies directly with the speed of the object
True
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False
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30s
• Q6
Two objects of different mass are moving at the same speed; the more massive object will have the greatest momentum.
True
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False
30s
• Q7
A less massive object can never have more momentum than a more massive object.
True
False
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30s
• Q8
Impulse is a force
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True
False
30s
• Q9
The kg•m/s is equivalent to the units on impulse.
False
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True
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30s
• Q10
A force of 100 N acting for 0.1 seconds would provide an equivalent impulse as a force of 5 N acting for 2.0 seconds.
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True
False
45s
• Q11
A truck driving along a highway road has a large quantity of momentum. If it moves at the same speed but has twice as much mass, its momentum is ________________.
Zero
Twice as much
Halved
30s
• Q12
In order to catch a ball, a baseball player naturally moves his or her hand backward in the direction of the ball's motion once the ball contacts the hand. This habit causes the force of impact on the players hand to be reduced in size principally because ___.
The time of impact is DECREASED
The impact velocity is REDUCED
The time of impact is INCREASED
The momentum change is DECREASED
30s
• Q13
Suppose that you're driving down the highway and a moth crashes into the windshield of your car. Which undergoes the greater change is momentum?
The moth
The car
Both are the same
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30s
• Q14
Cars are equipped with padded dashboards. In collisions, the padded dashboards would be safer than non-padded ones because they ____.
Increase Momentum Change
Increase the impact time
Decrease the impact time
Decrease Momentum Change
30s
• Q15
A 4 kg object has a momentum of 12 kg•m/s. The object's speed is ___ m/s.
3
48
4
12
30s

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