Momentum — Unit test Answers
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Holden is trying to determine the velocity of his race car. He went 20 meters east, turned around, and went 40 meters west. His car was 20 meters from the starting line. This took 5 seconds.What is the car’s average velocity?
A
4 m/s eastB
4 m/s westC
12 m/s westD
12 m/s east22
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Which describes what a velocity/time graph would look like with no acceleration?
A
curved line on a upward slopeB
straight line on a downward slopeC
straight line with zero slopeD
curved line on a downward slope23
Which example best represents balanced forces?
A
an elevator stopped on the third floorB
a basketball shot into a hoopC
a sled sliding down a snowy hillD
a tow truck pulling a car out of a ditch24
A toy car is placed at 0 on a number line.It moves 9 cm to the left, then 4 cm to the right, and then 6 cm to the left. What is the total distance the toy car traveled?
A
1 cmB
5 cmC
11 cmD
19 cm25
While drilling metal, Ben poured oil over the area. Which best explains why he did this?
A
Ben was trying to reduce fluid friction.B
Ben was trying to reduce kinetic friction.C
Ben was trying to increase fluid friction.D
Ben was trying to increase kinetic friction.Did you find these answers helpful?
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