Recent content by creativeone

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    Uncovering Projectile Motion Properties

    A projectile, fired with unknown initial velocity, lands 19.8 s later on the side of a hill, 2710 m away horizontally and 463 m vertically above its starting point. (Ignore any effects due to air resistance.) (a) What is the vertical component of its initial velocity? (b) What is the...
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    Solving 2D Motion Problems: Where to Start?

    A cannon barrel is elevated at an angle of 45°. It fires a ball with a speed of 283 m/s. (For the following questions, ignore air resistance.) (a) What height does the ball reach? (b) How long is the ball in the air? (c) What is the horizontal range of the cannon? Known 2D...
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    I have no idea how to start

    Yes, however, when I solved for initial velocity using x=v0t+1/2at^2, I got -0.25s. That doesn't sound right.
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    Cargo Planes and 2D Kinematics

    A cargo plane is flying horizontally at an altitude of 10.9 km with a speed of 850 km/h when a large crate falls out of the rear loading ramp. (Ignore any effects due to air resistance.) (a) How long does it take the crate to hit the ground? (b)How far horizontally is the crate from the point...
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    I have no idea how to start

    1. A ball launched from ground level lands 2.5 s later on a level field 30 m away from the launch point. Find the magnitude of the initial velocity vector and the angle it is above the horizontal. (Ignore any effects due to air resistance.) 2. Known Kinematic Equations 3. I don't...
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    How Much Does Gravity Affect a Baseball's Trajectory Over 18.4 Meters?

    1. While trying out for the position of pitcher on your high school baseball team, you throw a fastball at 76.4 mi/h toward home plate, which is 18.4 m away. How far does the ball drop due to effects of gravity by the time it reaches home plate? (Ignore any effects due to air resistance and...
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