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QUESTION 7 1 points A sprinter needs to improve her time in the 400 m dash event. What is her acceleration if she is cruising at 8.5s m/s and speeds up to 9.75 m/s in 1.08 s? OA 1.11 m/s OB.-1.11 m/s2 O C 0.900 m/s2 D.-0.900 m/s2 QUESTION 8 1 points A catcher catches a baseball that is traveling at 126 km/h. If the ball stops within 0.230 s, what is its acceleration? O152 m/s2 O-152 m/s2 O 0.547 m/s2 ○-0.547 mis2 Click Save and Submit to save and submit. Click Save All A to save all

Take Test: HW Quiz 4A- QUESTION9 A cable technician is fixing a cable connection on the roof of a 32.5 ft tall building. If the technician drops a screwdriver, how long will it take for the screwdriver to strike the ground? OA. 2.56 s OB. 1.42s ОС. 6.63 s O D. 3.25s QUESTION 10 Suzie has reached the end of the ski slope and abruptly decelerates from 29.0 m/s to 1.80 m/s in 1.45 seconds. Determine the distance she moved during this braking period. O a. 22.3 nm b. 18.8 m O c 12.9 m O d. 25.1 m O e. impossible to determine from the information given QUESTION 11 n the 20Rlumnirs lamairan snrinter Isain Reit shncked the world as he ran the 100-meter dash in 9 69 secnnds D

QUESTION 11 In the 2008 Olympics, Jamaican sprinter Usain Bolt shocked the world as he ran the 100-meter dash in 9.69 seconds. Determine Usains average speed for the race. O a. 10.3 m/s O b. 969 m/s O c. 0.0969 m/s O d. 1.03 m/s e. 0.103 m/s QUESTION 12 A Cessna aircraft has a lift-off speed of 120 km/hr. What minimum constant acceleration does this require if the aircraft is to be airborne after a take off run of 240 m? a. 2.31 m/s2 b. 3.63 m/s2 c. 4.63 m/s2 d. 5.55 m/s2

Question Com Status: QUESTION 13 A European sports car dealer claims that his product will accelerate at a constant rate from rest to a speed of 100 km/hr in 8.00 s. What is the speed after the first 5.00 s of acceleration? O a. 34.7 m/s O b. 44.4 m/s 。c. 28,7 m/s O d. 17.4 m/s QUESTION 14 e designed to operate on a drag strip accelerates from zero to 30 m/s while undergoing a straight line path displacement of 45 m. What is the vehicles acceleration if its value may be assumed to be constant? a.2.0 m/s2 b. 5.0 m/s2 c. 10 m/s2 d. 15 m/s2

QUESTION 15 tis possible for an object to travel at a constant speed, yet still be acceierating True False Chick Save and Submit to save and submit. Click Save All Answers to save all answers.

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see 七 叶11cm(4) 2 33. 33 x 33.33 3 6 u28-0 17-4

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