m A child stands in the middle of a trampoline and accelerates downward at a rate of 9.8 - 15y where y is the child's positon relative to the unstretched equilibrium position of the trampoline. Assume the child starts from rest at y = 0 and find: A. The maximum downward distance the child travels B. The maximum velocity of the child
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- m L 4. A box with a mass m = 0.4 kg is released from rest at the top of a curved section of a track that is one quarter of a circle with a radius R = 0.2m. When the box reaches the bottom of the curved track it slides on a horizontal section of the track. There is no friction on the curved section of the track. a. Find the velocity of the box at the bottom of the curved section of the track. b. Find the normal force on the block when it is at the bottom of the circular section of the ramp. If there is a Resistive force F on the horizontal section of the track and is given as a function of speed by F=-4v² c. Write down the differential equation for the speed of the block. 1 d. Show that the solution can be written as: v = 0.5 + 10tA golfer starts with the club over her head and swings it to reach maximum speed as it contacts the ball. Part A Halfway through her swing, when the golf club is parallel to the ground, does the acceleration vector of the club head point (a) straight down, (b) parallel to the ground, approximately toward the golfer's shoulders, (c) approximately toward the golfer's feet, or (d) toward a point above the golfer's head? Explain. Match the words in the left column to the appropriate blanks in the sentences on the right. tangential centripetal directed along the club pointed vertically up pointed vertically down Submit ‒‒‒‒‒‒‒‒‒‒ (a) (b) (c) (d) Request Answer The club head undergoes circular motion so it has a club head is increasing, it also has an acceleration component vector is pointed as described in Reset Help acceleration. As the speed of the Thus, the accelerationB1
- A particle starts from zo = 22 m at to=0 and moves with the velocity graph shown in (Eigure 1). You may want to review (Pages 41-43). Figure v, (m/s) 12 Z 1 2 3 8 4 0 1 of 1 r(s) Submit Value Part C Units Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Value What is the object's position at t=48? Express your answer to two significant figures and include the appropriate units. ? Units Submit Previous Answers Request Answer ? X Incorrect; Try Again; 3 attempts remainingAssuming negligible atmospheric friction, a launched projectile has a parabolic path, as shown above. Point Q is the path peak and Points P and R are at the same altitude. Identify the correct relationship of the projectile speeds at the three points. O A. vp = VR < VQ O B. VO < VR < vP OC.Vo< vp = VR O D. VR < VQ < vP O E. Vp < VQ < VRa m/s t A particle moves in a straight line with the acceleration shown in the figure. Knowing that the particle starts from the origin with v, = -2 ms, (a) construct the v-t and X-1 curves for 0P In the movie Avengers, Hawkeye fires an arrow with a cable attached to a building after jumping from it to avoid an explosion. If he fires the arrow 5 m away and 8 m below the top of the building, with a velocity of 100 m/s and a slope of 12:5, determine the horizontal distance the arrow will travel from his initial point of firing to the point where it hits the top of the building. Prove using equations of projectile motion that the arrow will not hit the top corner of the building Please provide diagrams too, thank youIndy Formula car (Fig. 2a) is travelling around the bend with radius r = 305 m. Its angular displacement is given by e = (0.05t + 0.06t³)rad. Determine the linear velocity of the formula car after t = 2s. ii Determine the tangential acceleration a of the formula car after t = 2s. ii The formula car is now travelling at 88.9 m/s, determine the bank angle 0 for the racetrack so that the wheels of the formula car will not have to depend upon friction to prevent it sliding up or down the track. Fig. 2ad You are going to throw a ball upward at an angle of 19.03 degrees. If you can throw it with an initial speed of 7.0 m/s, what is its initial horizontal velocity component? Your Answer: Answer