Which of the following materials has the lowest density?
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Question 2 of 42
Marilyn is driving to a wedding. She drives 4 miles south before realizing that she left the gift at home. She makes a U-turn, returns home to pick up the gift, and sets out again driving south. This time, she drives 1 mile out of her way to pick up a friend. From there, they continue 5 miles more to the wedding. Which of these statements is true about Marilyn's trip?
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Question 3 of 42
If the force acting on an object is doubled, how does its acceleration change?
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Question 4 of 42
An object has a constant velocity of 50 m/s and travels for 10 s. What is the acceleration of the object?
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Question 5 of 42
When calculating an object's acceleration, what must you do?
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