A javelin thrower standing at rest holds the center of the javelin behind her head, then accelerates it through a distance of 70 cm as she throws. She releases the javelin 2.0 m above the ground traveling at an angle of 30 degrees above the horizontal. Top-rated javelin throwers do throw at about a 30 degree angle, not the 45 degree you might have expected, because the biomechanics of the arm allow them to throw the javelin much faster at 30 degrees than they would be able to at 45 degrees . In this throw, the javelin hits the ground 64 m away. What was the acceleration of the javelin during the throw? Assume that it has a constant acceleration.

Q: A firework is launched with an initial velocity of 25 m/s at an angle of 60 degrees with respect to…

A: Given,

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A: Let  V = initial velocity of the ballH = maximum height reached by the ballt = time to reach max…

Q: A bullet is fired from the ground with an initial velocity of 50 m/s that makes with the horizontal…

A: initial speed = 50 m/s projection angle = 30 degrees initial vertical velocity = 50 Sin(30)  = 25…

Q: In the Olympic shotput event, an athlete throws the shot with an initial speed of 11.0 m/s at a…

A: Initial velocity (u) = 11 msAngle (θ) = 46oheight above the ground (h) = 1.80 m

Q: In the figure, a baseball is hit at a height h = 1.30 m and then caught at the same height. It…

A: This question is based on oblique projectile motion.

Q: In the figure here, a ball is thrown up onto a roof, landing 3.80 s later at height h = 25.0 m above…

A:

Q: In the figure here, a ball is thrown up onto a roof, landing 3.80 s later at height h = 19.0 m above…

A:

Q: A bullet is fired from the ground with an initial velocity of 50 m/s that makes with the horizontal…

A: The initial velocity of a bullet is, The angle of a projected bullet from the horizontal is, The…

Q: In the figure here, a ball is thrown up onto a roof, landing 4.70 s later at height h=22.0 m above…

A:

Q: A squirrel is launched due west from a height of 10 meters with an initial velocity of 80 meters per…

A: We will first write everything in vector form. Squirrel initial position: (0i^+0 j^+10k^) Velocity…

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A: Determine the horizontal distance covered by the third baseman. Determine the vertical velocity of…

Q: A particle moves in the xy plane, starting from the origin at t = 0 with an initial velocity having…

A: 1) The total velocity vector at t =2s Vx(t) = Vx(initial ) +axt Vx(t) = 10+3(2)  Vy(t) = -5  V2 =…

Q: A Chinook (King) salmon (Genus Oncorynchus) can jump out of water with a speed of 5.89 m/s. (See…

A: fish speed = 5.89m/s vertically upwards fish leave the water traveling vertically upwards

Q: In the figure here, a ball is thrown up onto a roof, landing 3.90 s later at height h = 20.0 m above…

A: h = 20 m t = 3.90 sec θ = 64o

Q: a rocket is launched at an angle of 53 degrees above the horizontal with an initial speed of 100…

A: A projectile motion is a kind of motion in which an object is thrown in the air with an initial…

Q: A diver runs horizontally off the end of a diving board with an initial speed of 1.50 m/s. If the…

A:

Q: Jonah is reading a novel that describes an athlete participating in an archery competition. The…

A:

Q: A soccer player kicks a ball with an initial velocity of 10.2 m/s at an angle of 54.0° above…

A:

Q: A puck is moving on an air hockey table. Relative to an x, y coordinate system at time t = 0 s, the…

A: At t = 0 s: The velocity of the puck is, v0  = (+1.1 m/s) i + (+8.6 m/s) j The acceleration of the…

Q: A cannonball is launched diagonally with an initial speed of 52.0m/s. Determine all unknowns.…

A:

Q: a baseball is hit at a height h = 1.00 m and then caught at the same height. It travels alongside a…

A:

Q: A puck is moving on an air hockey table. Relative to an x, y coordinate system at time t = 0 s, the…

A: The kinematic equations of motion are-1) v=u+at2) s=ut+12at23) v2=u2+2as where,u is initial…

Q: MIT's robot cheetah can jump over obstacles 46 cm high and has speed of 12.0 km/h. (a) If the robot…

A: Given data: Height h =46 cm Speed v=12.0 km/h

Q: 4 You are to launch a rocket, from just above the ground, with one of the following initial velocity…

A: Given: (1)              v0→=20i^+70j^ (2)              v0→=-20i^+70j^ (3)              v0→=20i^-70j^…

Q: A ball is launched from ground level with an initial upwards velocity of 20 m/s and an initial…

A: Given : Initial upwards velocity = 20 m/s and an initial horizontal velocity = 30 m/s.   Hence, the…

Q: A person, standing at the edge of a cliff overlooking the ocean, throws a stone with an initial…

A: (given)   Initial speed of stone = 20 m/s Time of flight of stone = 2 s…

Q: A 2.00-m-tall basketball player is standing on the floor 10.0 m from the basket, as in Figure P3.…

A:

Q: Irina, standing on the edge of a cliff, throws a stone at a 40-degree angle above the horizontal…

A: Let the assumed height of the cliff ,Irina standing be h Initial velocity in both cases(u) = 10.0…

Q: Hunter kicks a soccer ball with an initial velocity of 25 m/s at 30o above the horizontal. Which of…

A: In the given scenario, Horizontal component of the acceleration is given by, aX=0 Vertical component…

Q: A projectile is launched at an angle of 45° with a velocity of 250 m/s. If air resistance is…

A:

Q: A ball is thrown upward at an angle of 28° to the horizontal with initial velocity  ? = 62.0 m/s.…

A:

Q: A projectile is launched from the top of the cliff of height h with initial velocity v0 and launch…

A:

Q: In the figure, a baseball is hit at a height h = 1.20 m and then caught at the same height. It…

A:

Q: An object is launched horizontally at a height of 30 m with an initial velocity of 20 m/s. The…

A: H = 30 m initial velocity = 20 m/s projection = horizontal angle of projection = 0o

Q: In the figure here, a ball is thrown up onto a roof, landing 3.90 s later at height h = 18.0 m above…

A:

Q: A machine launches a tennis ball at an angle of 25° above the horizontal at a speed of 14 meters per…

A:

Q: In the figure here, a ball is thrown up onto a roof, landing 5.00 s later at height h = 22.0 m above…

A:

Q: A 2.00-m-tall basketball player is standing on the floor 10.0 m from the basket, as in the figure…

A: Write the expression of motion of x-direction. x=uxt10=ucos40°tut=13.05   ...... (1)   Write the…

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A: Initial velocity (u) = 49 msLaunch angle (θ) = 54o

Q: In the figure here, a ball is thrown up onto a roof, landing 4.80 s later at height h = 21.0 m above…

A: To find the solution, first reverse the motion of the ball and assume that the ball is projected…

Q: A man stands on the roof of a 15.0 m tall building and throws a rock with a velocity of magnitude…

A: Here, it is given that, a man stands on the roof of a 15.0 m tall building and throws a rock with a…

Q: VA = 30 m/s 4. The pitching machine is adjusted so that the baseball is launched with a speed of VA…

A: When an object is launched or projected in with a certain velocity in a certain direction, the total…

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A: Given: Speed of the ball from the tower top = 30 m/s At a certain point, the size of the vertical…

Q: An airplane releases a ball as it flies parallel to the ground at a height of ℎ=275 mh=275 m as…

A:

Q: her head, then accelerates it through a distance of 70 cm as she throws. She releases the javelin…

A:

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A: Given information: Here, v is the ball’s final speed, y is the height of the left-field seat where…

Q: In the figure here, a ball is thrown up onto a roof, landing 3.50 s later at height h = 24.0 m above…

A: Given: t=3.50sh=24.0mθ=61.0°

Q: A Chinook (King) salmon (Genus Oncorynchus) can jump out of water with a speed of 5.55 m/s. (See…

A:

Projectile Motion