7. A baseball player runs from home plate to first base, a distance of 90 feet.The graph shows the displacement of the player over time. https://tcan4424-oakcliff-ccl.gradpoint.com/Resour...
What is the approximate average speed of the player's run to first base?
8. Over a span of 6.0 seconds, a car changes its speed from 89 km/h to 37 km/h. What is its average acceleration in meters per second squared (m/s2)?
the time the player spent is about 4.7s, thus the avergae speed is 90 ft/4.7s = 19.15 ft/s.
delta V = (89-37)km/h = 52 km/h = 14.44 m/s
a = deltaV /t = 14.44/6.0 = 2.41 m/s^2
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