Question

What constant acceleration is required to increase the speed of a car from 30 ml/h to 54 mi/h in 5 s? (Round your answer to two decimal places.) 10.67 X ft/s2 Need Help? Read It Watch Talk to a Tuter Submit Answer Practice Another Version - 4 POINTS SESSCALC2 3.7.043. A stone is dropped from the upper observation deck of a tower, 600 m above the ground. (Assume 9 - 9.8 m/s?) (a) Find the distance (in meters) of the stone above ground level at time t. (t) = (b) How long does it take the stone to reach the ground? (Round your answer to two decimal places.) (c) With what velocity does it strike the ground? (Round your answer to one decimal place.) m/s (d) If the stone is thrown downward with a speed of 4 m/s, how long does it take to reach the ground? (Round your answer to two decimal places.) Need Help? Readit W atch It Talk to a Tutor

Answer 1

Given the ho 600 m 9=29.8 salsa (a) Find the distance beba ho tu6 +0.5 att h=600 to +0.5(-9.8) t² habeo -4.972 (6) at ground h(t)=0 6oo - 4o8t so 4.3 +²=600 + 600 11:07 t=16007s (c) velocity it strikes the ground Vab'CH) = -0.49(2+) =-98 t speed when streke ground TV3-968C1107) = 108.5 als (d) The stone is thrown dowward with a speed ha hotattoos at cohen b=600-47-0.519.8)ť? h = 600247-4.9+ hit the ground bo G00-45-4.9% =0 ts- 4 14 404-9-éco 204.9) t= 10.673) That you