Which acceleration below would you feel the most? a. 5 m/s^2 b. 10 m/s^2 с. 15 m/s^2 d. 20 m/s^2

6. An object is thrown vertically upward with a speed of 12 m/s. How much time passes before it reaches a speed of 25 m/s downwards? (Air resistance is negligible.) а. 1.3 s b. 1.9 s d. 4.3 s e. 0.80 s с. 3.8 s

2. A jet plane has a takeoff speed of vtakeoff = 73 m/s and can move along the runway at an average acceleration of 2.4 m/s2. The runway is 1.2 km. Write out the 3 Kinetic equations. a. b. Write out the values of initial position, initial velocity, and acceleration. How many seconds will it take for the plane to reach takeoff speed? с. d. How far will the plane have to travel to get to takeoff speed? will the plane be able to get to take off before it gets to the end of the runway? е.

The Hint The position of a particle moving along the x axis is given by x = (21 +22t+8t²) m, where t is in s. What is the instantaneous velocity of the particle at t= 5.0 s ? a. b. C. e. f. 10.2m/s -2.0 m/s -82.0m/s 331 m/s 102m/s -6.0 m/s

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9. A car with its brakes applied has an acceleration of -1.2 m/s˄2. If its initial velocity is 10 m/s, the distance the car covers in the first 5 seconds after the acceleration begins is A. 15 m B. 32 m C. 35 m D. 47 m 12. A train starting at 30 km/h travels a distance of 21 km in 18 min. Determine the acceleration of the train at this instant. A. 0.0865 m/s˄2 B. 0.0206 m/s˄2 C. 0.3820 m/s˄2 D. 0.0043 m/s˄2 13A stone is dropped from a cliff. After it has fallen 30 m, the magnitude of its velocity is approximately A. 17 m/s B. 24 m/s C. 44 m/s D. 588 m/s Answer the following, i only need the letter of correct answer.

A car travelling due north at 18.5 m/s. What is the velocity of the car after 9.2s if it is accelerating at the rate of 2.2 m/s²? A. 38.74 m/s В. 172.4 m/s С. 20.7 m/s D. 170.2 m/s O D O A ов