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?

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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)?

7. According to the picture,

the trip takes about 4.7 seconds. 90ft/4.7s = 19.15ft/s ≈ 20ft/s

8. 1km /h= 1000/3600=5/18 m/s

89 km/h=24.72 m/s

37 km/h=10.28 m/s

a=deltav/t=(10.28 m/s-24.72 m/s)/6s=-2.41m/s^2

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