- 1.2 m/s, y = 2.4 The position of a bird in the xy-plane is given by Btî + (yt-c t?)j where a = and B = -4.8 m/s. What is the bird's net acceleration at 2.0 s (magnitude and direction)? %3D O 2.4 m/s2 in the -y direction O 7.2 m/s? in the +y direction O 1.2 m/s2 in the +y direction O 7.2 m/s? in the -y direction O 5.4 m/s2 in the +y direction 5.4 m/s2 in the -y direction O 2.4 m/s? in the +y direction O 1.2 m/s2 in the -y direction

A person who is 1.2 m tall throws a ball with a speed of 21 m/s at an angle of 33 degrees above the horizontal, as show h = 1.2 m, v = 21 m/s, 0 = 33 degrees Use the acceleration due to gravity as g = 10 m/s². XE X What are the x and y components of the initial velocity? 0 m/s Submit Answer Tries 0/2 What are the x and y components of the ball's velocity when it is at its maximum height? ) m/s Submit Answer Tries 0/2 What are the x and y components of the ball's velocity the instant before it hits the ground? ) m/s Submit Answer Tries 0/2 What is the ball's speed (the magnitude of the velocity) the instant before it hits the ground? m/s Submit Answer Tries 0/2 What is the time of flight; that is, the time taken for the ball to hit the ground after it has left the person's hand? Submit Answer Tries 0/2 y

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11. A moderate wind accelerates a pebble over a horizontal ry plane with a constant acceleration â = (5.00 m/s?)î + (5.00 m/s²)j. At time t (4.00m/s)i. What are the (a) magnitude and (b) anggle of its velocity when it has been displaced by 12.0 m parallel to the x axis? 0, the velocity is %3D |3|

PAGE 82. Savannah Dread HOMEWORK CHAPTER 3 t= d= 9 Water pistol horizontally aimed. The speed stream is v, = 5.00 m/s. a) How far has stream dropped at 1.00 m out? b) At what distance out will it have dropped 1.0 cm (= .010 m)? Ans. a. -1.96 x 10¹ m (- 19.6 cm), b. 2.26 x 10¹ m (22.6 cm) d

2. A particle moves in uniform circular motion, over a horizontal xy- plane. At one instant it moves through the points (2.0 m, 4.0 m) with a velocity of -6.00i m/s and an acceleration of 18.0j m/s?. a) Draw the circular path of the particle and label the velocity vector and the acceleration vector. b) Calculate the x and y-coordinates of the center of the circular path. c) Calculate the period of rotation.

45°. At t = 3.0 s the At t = 0 s a particle located at the origin has a speed of 42 m/s at an angle 0 = particle is at x = 150 m and y 85 m with a speed of 36 m/s at 0 Calculate the average velocity of the particle during this interval. Calculate the average acceleration of the particle during this interval. 55°

9. || CALC A particle's trajectory is described by x = (t³ - 2t²) m and y = (t²- 2t) m, where t is in s. 1 a. What are the particle's position and speed at t = 0 s and t = 4 s? b. What is the particle's direction of motion, measured as an angle from the x-axis, at t = 0s and t = 4 s?

physics, pleaassssse solve question 4