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7 A, B and C are points on the circumference of a circle centre O Prove that angle BOC is twice the size of angle BAC 4 8 B, C and D are points on a circle Angle ABC = 92° Angle ACB = 38° Angle ACD = 50° Angle CDE = 32° Tick whether each statement is true or false Give aA 30 30 B C 04 m 04 m v AB 4 rad/s a AB 22 rad/s 16–111 Crank AB rotates with the angular velocity and angular acceleration shown Determine the acceleration of the V 2a a A O B V, A Ans a B = 158aa 177v2a Ans a¿=0577a v2 O =aa 2aa¿a 2 23 b 2aa v 23 b 2 a 1 2 b a B = aa v2a 2a(a¿)a 1 2 b 2a a v 23 b 223 2 aThe vertical distance travelled by the ball is given by by y = y o v yo t – ½gt2 y = 30 m v yo t – ½(10)t2 = 30 v yo t – 5t2 The vertical velocity v yo = v o sin = 35 m/s sin 30 = 35(½) = 17 m/s This comes from sin = 𝒗 𝒐 𝒗𝒐 Setting y = 0 to find and solving (using a graphing calculator) for t to Educational Research And Reviews The Relationships Between The Big Five Personality Traits And Attitudes Towards Seeking...