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Q: An object is launched horizontally off a cliff with a velocity of 14 m/s. a) How long will it be in the air for? b) How far, horizontally, will the ball move before hitting the ground? A: The keys to this question is that horizontal velocity is constant, and initially the vertical velocity . . . → Read More: Horizontal Launch off a Cliff  Comments are closed  Kinematics, Physics 11  cliff, horizontal velocity, projectile, vertical velocity Q: A tennis ball is thrown vertically upward with an initial velocity of +6.7 m/s. What will the ball’s velocity be when it returns to its starting point? The acceleration of gravity is 9.81 m/s^2. A: Its velocity will be – 6.7 m/s. This is true for anything that is thrown vertically upwards. Look . . . → Read More: Ball thrown vertically upwards Q: What are the kinematics equations? Where = displacement = initial velocity = final velocity = acceleration = time These are very useful, and you will use them many times before you are finished Physics 11. It would definitely help to memorize . . . → Read More: Kinematics Equations One comment - (Comments are closed) Kinematics, Physics 11 kinematics, motion, projectiles, velocity Q: A rocket moves upward, starting from rest with an acceleration of 27.2 m/s2 for 3.49 s. It runs out of fuel at the end of the 3.49 s, but does not stop. How high does it rise above the ground? A: Okay the rocket’s moving up with an acceleration of +27.2m/s^2 for a . . . → Read More: Vertical Motion of a Rocket Some things you should know for projectiles (note that you haven’t done anything with angles yet, so you can ignore the sine and cosine parts): The vertical and horizontal components are independent of each other. The vertical velocity is usually Vy = V*sin(Ï´) horizontal velocity is usually Vx = V*cos(Ï´), where V is the . . . → Read More: Tips to Remember for Kinematics and Projectile Questions Comments are closed Kinematics, Physics 11 -9.8m/s^2, acceleration, components of velocity, final velocity, initial velocity, kinematics equations Q: A student standing on the top of a cliff shoots an arrow from a height of 30.0 m at 25.0 m/s and an initial angle of 32.0° above the horizontal. There are four parts to this question. a) What will be the horizontal and vertical components of the arrow’s initial speed? Horizontal component . . . → Read More: An arrow is shot off a cliff at an angle, with crosswind |
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