In this lab's video you will see a steel ball being fired horizontally from a mini-launcher. Assuming that the steel ball is approximately 1 m off the ground when fired and first hits the ground at a distance 2m to the right of its initial position, estimate the launch speed (in m/s) that you might expect to find in this lab.

A physics book slides off a  horizontal tabletop with a speed of 68 cm/s. It strikes the floor in 0.250 s. Ignore air resistance. Find, a.) the height of tabletop above the floor. b.) the horizontal distance from the edge of the table to the point where the book strikes the floor. c.) the horizontal and vertical components of the book's velocity, and the magnitude and direction of its velocity, just before the book reaches the floor.

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A ball is launched at a velocity of 20 m/s in a direction making an angle of 25 upward with the horizontal. a) What is the maximum height reached by the ball? b) What is the total flight time (between launch and touching the ground) of the ball? c) At what horizontal distance from the point of release will it strike the ground? d) What is the magnitude of the velocity of the ball just before it hits the ground?

A supply plane flies horizontally with a speed of 100 m/s and an altitude of 350 m. Use g = -10 m/s/s. A) What are the initial velocity components of an object that is dropped from the plane at the instant it is dropped? B) How fast is an object that is dropped from the plane traveling 7.5 seconds later?  C) What angle, below the horizontal, does the velocity vector of an object that is dropped from the plane make 7.5 seconds later?  D) How long does it take for an object that is dropped from the plane to hit the ground when air resistance is neglected?  E) How far does an object that is dropped from the plane travel in the horizontal direction?

Doha kicks the ball in a parabolic path. The ball leaves the player’s foot with a speed of 20 m/s, making an angle of 40 o with the horizontal. a) Calculate the maximum height of its trajectory  b) Determine its velocity as it hits the ground again. Air resistance is negligible. c) How far from Darshan does the soccer ball land?

A projectile is launched from ground level at a velocity of 28 m/s and an initial angle of 37 degrees. What is the projectile's velocity the instant before it hits the ground? Include a drawing and all steps. Use the projectile motion equations.

Make a prediction regarding what launch angle will produce the maximum horizontal range for a projectile launched from level ground and landing back on level ground. Provide reasoning to support your hypothesis.

A rock was thrown horizontally from a 100.0 m high cliff. It strikes the ground 90.0 m from the base of the cliff. a) At what speed was it thrown? b) How long did it take to hit the ground. c) Neglecting wind resistance, which component of velocity is affected by gravity VERTICAL or HORIZONTAL? d) Sketch the trajectory of the rock as it falls to the ground and include the velocity vector at the beginning, midway down, and just before striking the ground. e) After you determine the total time in the air, you can then determine the final vertical velocity vector combined with the horizontal velocity determined earlier. Use these vectors to determine the resultant velocity vector just before landing. Recall using Pythagorean theorem to find the magnitude of the velocity vector and trigonometry for the angle below the horizontal that the resultant vector strikes at.

Use a graphing utility to obtain the path of a projectile launched from the ground (h = 0) at the specified values of θ = 35°, v0 = 300 feet per second. In the exercise, use the graph to determine the maximum height and the time at which the projectile reaches its maximum height. Also use the graph to determine the range of the projectile and the time it hits the ground. Round all answers to the nearest tenth.