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1.
2 points
A kangaroo is capable of jumping to a height of 2.62 m. Determine the takeoff speed of the kangaroo.(Type ans alone)
Answer:
2.
2 points
With what speed in miles/hr (1 m/s = 2.23 mi/hr) must an object be thrown to reach a height of 91.5 m (equivalent to one football field)? Assume negligible air resistance.
89.6 mi/hr
94.4 mi/hr
94.6 mi/hr
96.8 mi/hr
3.
2 points
An airplane accelerates down a runway at 3.20 m/s2 for 32.8 s until is finally lifts off the ground. Determine the distance traveled before takeoff.
1628
1720
1668
1540
4.
2 points
A stone is dropped into a deep well and is heard to hit the water 3.41 s after being dropped. Determine the depth of the well.
54
57.4
-57
-56.2
5.
2 points
A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak. (Hint: the time to rise to the peak is one-half the total hang-time.)
46m
48m
48.25m
49.2m
6.
2 points
Rocket-powered sleds are used to test the human response to acceleration. If a rocket-powered sled is accelerated to a speed of 444 m/s in 1.83 seconds, then what is the acceleration and what is the distance that the sled travels?
(Type ans alone)
Answer:
7.
2 points
A feather is dropped on the moon from a height of 1.40 meters. The acceleration of gravity on the moon is 1.67 m/s2. Determine the time for the feather to fall to the surface of the moon.
1.35s
1.26s
1.29s
1.18s
8.
2 points
An engineer is designing the runway for an airport. Of the planes that will use the airport, the lowest acceleration rate is likely to be 3 m/s2. The takeoff speed for this plane will be 65 m/s. Assuming this minimum acceleration, what is the minimum allowed length for the runway?
688
704
626
720
9.
2 points
What is the probability that two squares(smallest dimension) selected randomly from a chess board will have only one common corner?
7/144
7/288
7/72
2/63
10.
2 points
It was once recorded that a Jaguar left skid marks that were 290 m in length. Assuming that the Jaguar skidded to a stop with a constant acceleration of -3.90 m/s2, determine the speed of the Jaguar before it began to skid.
46.8 m/s
46.9 m/s
47.6 m/s
47.9 m/s
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