Act science practice test pdf1/28/2024 ![]() Table 1 indicates the vertical velocities of the three different objects as measured every 5 seconds. Where other forces have been applied, they always begin and end at one of the 5-second intervals. They each may also be influenced by other vertical forces for all or part of that period. Each of the objects is operating under the influence of gravity for the entire 45 seconds being studied. Table 1 and Figure 1 provide information about the vertical velocities measured for three different objects without regard to the horizontal motion of the objects. These other forces, acting in combination with gravity, can cause a net force greater than or less than gravity, and, therefore, a net acceleration different from the downward acceleration of 9.8 m/s 2 caused by gravity. Other forces, including those produced by wind and aerodynamic lift, as well as jet, rocket, internal combustion or other engines may also exert upward or downward forces on these objects. The earth’s gravitational force produces a downward acceleration of 9.8 m/s 2 on all objects near the earth’s surface. ACT Science Passage I-Data Representation ![]()
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