In the figure, a ball is thrown leftward from the left edge of the roof, at height h above the ground. The ball hits the ground 1.50 s later, at distance d = 26.0 m from the building and at angle e = 62.0° with the horizontal. (a) Find h. (Hint: One way is to reverse the motion, as if on videotape.) What are the (b) magnitude and (c) angle relative to the horizontal of the velocity at which the ball is thrown (positive angle for above horizontal, negative for below)? (a) Number Units (b) Number Units (c) Number Units
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- In the figure, a ball is thrown leftward from the left edge of the roof, at height h above the ground. The ball hits the ground 1.60 s later, at distance d = 25.0 m from the building and at angle 8 = 69.0° with the horizontal. (a) Find h. (Hint: One way is to reverse the motion, as if on videotape.) What are the (b) magnitude and (c) angle relative to the horizontal of the velocity at which the ball is thrown (positive angle for above horizontal, negative for below)? (a) Number i (b) Number i Units UnitsIn the figure here, a ball is thrown up onto a roof, landing 5.00 s later at height h = 22.0 m above the release level. The ball's path just before landing is angled at 0 = 65.0° with the roof. (a) Find the horizontal distance d it travels. (Hint: One way is to reverse the motion, as if it is on a video.) What are the (b) magnitude and (c) angle (relative to the horizontal) of the ball's initial velocity? 0000 (a) Number (b) Number (c) Number Unit Unit Unit <In a computer game, an airplane starts at (1, 6) (in cm) on the curve y=5+(1.6t+1)^−1.3and moves with a constant horizontal velocity of vx=1.6cm/s. What is the plane's velocity at t= 5 s? A)magnitude = 1.69, direction = 164.6 B)None of the above C)magnitude = 1.60, direction = 90.5 D)magnitude = 1.60, direction = 161.4
- A remote-controlled car is moving around in a level (horizontal) parking lot. The velocity of the car as a function of time is given by: 3 = [5.0m/s – (0.018m/s³)t²]î + [2.0m/s + (0.55m/s²)t]j where î and ĵ are unit vectors representing two perpendicular directions on the horizontal ground (think of them as the East and North directions, if that helps you). b). What are the magnitude and direction of the car's velocity at t = 8.0 s? c). What are the magnitude and direction of the car's acceleration at t = 8.0 s? (Don't be intimated by the velocity function! Look at the î and ĵ components, and work each component separately to begin with, before combining components together to get any resultant vectors, if needed.)Problem 3: An arrow is shot from a height of 1.8 m toward a cliff of height H. It is shot with a velocity of 35 m/s at an angle of 60° above the horizontal. It lands on the top edge of the cliff 3.7 s later. What is the height H of the cliff in m? H = cos() asin() sin() tan() 7 8 9 HOME cotan() acos() 5 atan() acotan() sinh() 1 2 3 cosh() tanh() cotanh() + END ODegrees O Radians vol BACKSPACE DEL CLEAR Submit Hint Feedback I give up! What is the maximum height reached by the arrow along its trajectory in meters? What is the arrow's speed just before hitting the cliff in m/s?3. 15. A skateboarder shoots off a ramp with a velocity of 6.6 m/s, directed at an angle of 58° above the horizontal. The end of the ramp is 1.2 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the origin the point on the ground directly below the top of the ramp. (a) How high above the ground is the highest point that the skateboarder reaches? (b) When the skateboarder reaches the highest point, how far is this point horizontally from the end of the ramp?
- A person stands at the edge of a cliff and throws a rock horizontally over the edge with a speed of Vo = 22.0 m/s. The rock leaves his hand at a height of h = 46.0 m above level ground at the bottom of the cliff, as shown in the figure. Note the coordinate system in the figure, where the origin is at the bottom of the cliff, directly below where the rock leaves the hand. = i (a) What are the coordinates of the initial position of the rock? (Enter your answers in m.) хо Yo = Voy Vy y = 4o (b) What are the components of the initial velocity? (Enter your answers in m/s.) Vox m/s m/s 11 m m (c) Write the equations for the x- and y-components of the velocity of the rock with time. (Use the following as necessary: t. Assume that vx and v, are in m/s and t is in seconds. Do not include units in your answers.) oral m/s m/s Simuna wir + Accumo that y andy are in meters and it is in seconds. Do notIn the figure here, a ball is thrown up onto a roof, landing 3.70 s later at height h = 20.0 m above the release level. The ball's path just before landing is angled at 0 = 60.0° with the roof. (a) Find the horizontal distance d it travels. (Hint: One way is to reverse the motion, as if it is on a video.) What are the (b) magnitude and (c) angle (relative to the horizontal) of the ball's initial velocity? OO口口 DODD (a) Number i Unit (b) Number i Unit (c) Number i Unit > > >In the figure here, a ball is thrown up onto a roof, landing 4.10 s later at height h = 20.0 m above the release level. The ball's path just before landing is angled at e = 68.0* with the roof. (a) Find the horizontal distance d it travels. (Hint: One way is to reverse the motion, as if it is on a video.) What are the (b) magnitude and (c) angle (relative to the horizontal) of the ball's initial velocity? 0000 (a) Number i Unit (b) Number i Unit (c) Number i Unit > > >
- In the figure, a ball is thrown leftward from the left edge of the roof, at height h above the ground. The ball hits the ground 1.60 s later, at distance d = 26.0 m from the building and at angle 0 = 67.0° with the horizontal. (a) Find h. (Hint: One way is to reverse the motion, as if on videotape.) What are the (b) magnitude and (c) angle relative to the horizontal of the velocity at which the ball is thrown (positive angle for above horizontal, negative for below)? (a) Number 48.71 (b) Number 27.84 (c) Number i 54.28 Units m Units Units m/s ° (degrees)Determine the vector magnitudes and directions for the relative velocities VA/B and VB/A, given these magnitudes and directions for the vectors VA and VB:(a) VA: magnitude 70km/h ; direction 30°VB: magnitude 50km/h ; direction 125° (b)VA: magnitude 70km/h ; direction 30°VB: magnitude 50km/h ; direction 225° (c) VA: magnitude 70km/h ; direction 30°VB: magnitude 50km/h ; direction 340° (d)VA: magnitude 70km/h ; direction 135°VB: magnitude 50km/h ; direction 60°NOTE: The direction is the angle (degrees) from the positive horizontal axes in an anticlockwise direction.A turtle ambles leisurely from a location with position vector r1,x = 1.87 m and ri.y = -2.95 m in a lettuce garden to another location with position vector r2.x = 3.91 m and r2.y = -4.27 m, where the lettuce appears to be tastier. The excursion takes 5.17 min to complete. What are the components and the magnitude of the turtle's average velocity in meters per second? Vav,x m/s Vav,y m/s %3D m/s %3D