Question

QUESTION 4 A bullet is fired vertically upward, with an initial velocity of 260 m/s a) how high does it go? 1.3449.0 m 2.3384.6 m 3.345.1 m 4.6458.2 m QUESTION 5 A plane moving at 300 km/h lands on an aircraft carrier after rolling to a stop in 205 m. What was the required acceleration for a safe landing? (hint: transform units) 1.16.94 m/s2 2. 83.3 m/s2 3.8.4 m/s2 4.170 m/s2 QUESTION 6 A truck accelerates from 85 km/h to 120 km/h in 10 seconds. What is the acceleration in m/s2 1.0,97 m/s2 2.28.5 m/s2 3.3.33 m/s2 4.1.86 m/s2

Answer 1

4 u Linitial velocity) = 260m's v=o motion wird eruation v²_u² teas rez-u² S2 2(-9) 20-(26092 - 2x9.8 s = 3449 m/Answer 5 = 300 x 5 s=205m ,v=0 v² = 4² tras Az qe-u² (0)²-(83.34² 2S 2 x 205 16.94 m/s2 retardation. a = w-u acceleration (a) t V = 120km/n = 33.34 mis u = 85km/n = 23.61m's t = 10 sec 33.34 - 23.61 a= 9.73 9 = a=0.97 m2 Answor

u o ,V=24m/s a = g = 9.81 m/s2 / = 4² 4205 8 V- utat t = v-u t = 24-0 9.81 t = 2.45 sec Answer 8 V = oogmis h = 1 4 m R = /2h ot -0,9/2014 9.81 -0.92.8 9.81 20.980, 2854 R=0.48m/Answor.