Question

Item 12 An antalope moving with constant acceleration covers the stanice 750 mn between two points in time 800 s. Its speed as it passes the second point is 15.0 m/s Part A What is its speed at the first point? Express your answer with the appropriate units. .? CHA. Tame Units Submit Request Answ Part 8 What is the acceleration? wixpress your answer with the appropriate units. CHAROO?

Answer 1

time = 8.00 seconds r 75 m - since the motion is with consta acceleration, we can use the two kinemetics egn. e v=utat quz_u²=2a8 4 u=v-at & u²= 4²_zas . u=15-ax8 & 4 = 225 - 2x75.a u=15-8a -o u =225-150 a ®

put u from A in B (15-89)2 = 225-150 a 226 +6492_2404=225 -1500 DATE......... 6 ya 2-240 a +150 a =0 Gua?- qua=0 7 a=0 (not possible) algua-90) =0 J & Gua=90 a= 1040 m/s2 Now , U=v-at = 15-1.4x8 mls. S = 3.75 mio. i velocity = 395 m/s & acceleration = 1.40 m/8²