If the 10-kg ball has a velocity of 3 [m/s] when it is at the position A, along the vertical path, determine the tension in the cord and the increase in the speed of the ball at this position. 2 m 0 = 45° A3 m/s
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- 32How will the velocity change when the acceleration is perpendicular to it? None of the magnitude and direction will change. The magnitude of velocity will change and the direction will not. The direction of velocity will change and the magnitude will not. Both the magnitude and direction will change.Back on Earth, a ball is thrown off a roof top with a horizontal velocity 8 m/s and a downward vertical velocity 5 m/s. It hits the ground 2.2 s later. What is the direction at which the ball hits the ground? Give the angle the velocity vector makes with vertical (straight down = 0° and horizontal = 90°). Use g = 9.8 m/s² if needed and neglect air friction. %3D Read carefully -- there are versions of this question with upward vertical velocity and another with downward vertical velocity.
- A tennis ball is thrown with an initial velocity of 15.0 m/s at an angle of 60.0° above the horizontal. If air resistance and wind are neglected, the ball will fall ____ m horizontally from the point of release. •20.0m •22.1m •15.0m •18.4mWhat is the caveman's average velocity for the entire trip?6. A frictionless cart sits on a ramp that is tilted down at an angle of 30.0° from horizontal. The cart is released from rest, with an initial position of * = [0 m] + [0.500 mlj It rolls down the ramp (down and to the right) once it is released, and it's acceleration points down the ramp, parallel to the ramp, with a magnitude of 4.90 m/s². Use a coordinate system where up is +y and to the right is +x. a. What are the x- and y-components of the cart's initial velocity? b. What are the x- and y-components of the cart's acceleration? c. Use your answers to parts a and b to find the cart's position and velocity 1.50 seconds after it is released. Write your answers in unit vector notation.
- HELPAt what altitude above the Earth's surface is the acceleration due to gravity equal to g/ 2? h = ? mQuestion 1 If the motorcycle in Figure 1 leaves the ramp traveling at 110 m/s, determine the height h ramp B must have so that the motorcycle lands safely. Tips: Use below equation below to solve the problem. XB = XA + (VA) xt YB = YA+ (VA) yt + A 1 2a, 1² 110 m/s 30° 30 m 350 m Figure 1 B