Approximately how large (across) is an impact crater compared to the size of the impactor?

A) the same size
B) 10—20 percent larger
C) 10 times larger
D) 100 times larger
E) 1000 times larger


C) 10 times larger

Physics & Space Science

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Constant Acceleration Kinematics: Starting from rest, a dragster travels a straight 1/4 mi racetrack in 6.70 s with constant acceleration. What is its velocity when it crosses the finish line?

A. 269 mi/h B. 188 mi/h C. 296 mi/h D. 135 mi/h

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Two small balls, A and B, attract each other gravitationally with a force of magnitude F. If we now double both masses and the separation of the balls, what will now be the magnitude of the attractive force on each one?

A) 16F B) 8F C) 4F D) F E) F/4

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An object on the flat bed of a truck that is accelerating along a straight horizontal road. The coefficient of static friction is 0.300 in this case. Of the following choices, which is the lowest value of acceleration that would result in the object sliding on the bed of the truck?

a. 0.280 m/s2 b. 0.310 m/s2 c. 2.93 m/s2 d. 2.99 m/s2 e. 3.02 m/s2

Physics & Space Science