The position vector of SpaceX Falcon 9 is given by r(t) = (20t)i + (2t^2+1)j, where t is time in seconds. Find the speed of Falcon 9 at time t = 10s?
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- stion A postman leaves the post office and drives 1.6 km in the north direction. He then drives in a direction 60.0° south of eact for 5.9 km (see Figure) North out of 60° East Post office What is his resultant displacement from the post office (in vector form)? O a. -3.51 mi + 2.95 mj Ob. 5.90 mi+ 1.60 mj Oc. 2.95 mi+-3.51 mj Od. None of the above O e. 1.35 mi- 5.11 mjA body moves in space , the location vector r 2 = 2t i +tj +2 k m, How much the velocity of it at 2 second V = m/sec (2 aic aïcw ya ps ?) ثانيه Select one: a. 10.05 mls b. 8.06 m/s c. 9.03 m/s d. 7.02 m/sA speedboat moves on a lake with initial velocity vector vx = 8.65 m/s and vLy = -2.21 m/s, then accelerates for 6.69 s = 0.107 m/s². What are the components of the speedboat's final %3D at an average acceleration of aav.x = -0.108 m/s² and aav.v velocity, v2.x and v2.y? m/s U2,x m/s U2,y Find the speedboat's final speed. m/s final speed: II
- An object starts to move from the rest at t = 0 and its acceleration vector is given as Quiz na d = (2t +8t) î + (12 t + 5t2 + 2) ĵ m/s². of What is the magnitude of the velocity vector, in m/s, at time t = 1 s? %3D 10 stion O 16.28 Finish atte O 8.14 Time left O 24.41 O 4.07 48.83 Next page 219.01 m/s and v1.y = -2.49 m/s, then accelerates for 5.51 s at an average acceleration of aavx = -0.102 m/s? and aavy = 0.104 m/s?. What are the components of the speedboat's final velocity, A speedboat moves on a lake with initial velocity vector vIx v2.x and v2.y? U2.x 8.45 m/s U2.y -1.92 m/s Find the speedboat's final speed. 4.76 final speed: m/s Incorrect ||A speedboat moves on a lake with initial velocity vector v1x = 8.41 m/s and vy = -2.45 m/s, then accelerates for 5.41 s at an average acceleration of aav.x = -0.101 m/s2 and aay.y = 0.103 m/s². What are the components of the speedboat's final velocity, v2.x and v2.y? m/s U2.x = m/s U2,y = Find the speedboat's final speed. final speed: m/s
- Completion Status: A Moving to the next question prevents changes to this answer. Quèstion 1 1.25 p A projectile is fired with an initial speed Vo = 20 m/s at an angle of 37° above the horizontal, as shown in the figure. What is its velocity (in m/s) at the highest point? 37 R O a. v = 16i O b. v = 0 Oc.v 12j O d. v = 12i - 16j O e. v = 16i +12j.A body is projected downward at an angle of 30° with the horizontal from the top of a building 170m higri. ts initial speed is 40m/s. a. How long will it take before striking the ground? b. How far from the foot of the building will it strike? C. At what angle with the horizontal will it strike?9.11 m/s and v1.y = -2.65 m/s, then accelerates for 6.65 s at A speedboat moves on a lake with initial velocity vector v1.x = -0.103 m/s² and aav,y = 0.104 m/s?. What are the components of the speedboat's final an average acceleration of aav.x velocity, v2,x and v2.y? m/s U2,x m/s U2.y Find the speedboat's final speed. m/s final speed:
- A cannon sits on a cliff that is 40 m high. It shoots a ball at 25 m/s and an angle of 30°. V=25m/s trotal? O = 30° hmax=? H = 40 m X=? a. What is the maximum height of the ball? b. How much time does it take the ball to hit the ground?Kinematics 2: Motion in 2-Dimensions and ons 19. An object is moving in a uniform circular motion. True or False? The linear velocity of the object is constant. 25. An 20. An object is moving in a uniform circular motion. True or False? The centripetal accelerationn is equal to-g. ur re 21 An object is moving in a uniform circular motion. True or False? The direction of the centripetal acceleration is always towards the center 26 22. An object is moving in a uniform circular motion. True or False? rad/s is a unit of angular frequency.A small ball rolls horizontally off the edge of a tabletop that is 1.50 m high. It strikes the floor at a point 1.52 m horizontally from the table edge. How long is the ball in the air in seconds? Lütfen birini seçin: O A. 0.495 O B. 0.602 O C. 0.553 O D. 0.426 O E. 0.587