A child on a bridge throws a rock straight down to the water below. The point where the child released the rock is 94 m above the water and it took 1.2 s for the rock to reach the water. Determine the rock's velocity (magnitude & direction) at the moment the child released it. Also determine the rock's velocity (magnitude & direction) at the moment it reached the water. Ignore air drag.
Q: You are in a hot-air balloon and descending toward the ground at 20.0m/s. You toss a stone…
A:
Q: Firework rocket can be shot straight up to 150 meters high (maximum height) before explosion. If we…
A: Given data: Initial position y = 0 m Final position y = 150 m Free-fall motion Required: Initial…
Q: 3. Three identical objects are thrown from the same height through a window at the same time. Object…
A: (e) option is correct
Q: 5. Consider projectile motion with air resistance taken into account. If the resistance is…
A: Projectile motion with air resistance is a classical mechanics problem that involves studying the…
Q: all center holds a basketball straight out, 2.0 m above the floor, and releases it. It bounces off…
A: Given Basket ball hold at height, h=2 mAfter bounce off the floor , Ball rises to height, h'=1.5 m
Q: A brick is thrown upward from the top of a building at an angle of 20° to the horizontal and with an…
A:
Q: Children playing in a playground on the flat roof of a city school lose their ball to the parking…
A: height of playground (h') = 5.30 m height of vertical wall (h) = 6.80 m Launch angle (θ) =…
Q: A stuntman tries to jump from a ledge over an 8 m gap onto a mattress that is 3 m below the current…
A:
Q: A rifle is aimed horizontally at a target 45 m away. The bullet hits the target 2.2 cm below the aim…
A:
Q: If you drop an object from a height of 1.3 m, it will hit the ground in 0.52 s. If you throw a…
A: Given : h = 1.3 m t = 0.52 s vox = 42 m/s
Q: Kennedy decides to meet up with Meagan after school to discuss their catapult assignment. She walks…
A: Initially the person covers the distance towards west direction.Then the person covers towards the…
Q: 3. A man is wearing 100 foot stilts with a bow and arrow. He proceeds to shoot the arrow straight…
A: Given Data: The initial vertical velocity of the bow is, u0=49 m/s The height of the stilts is h=100…
Q: bird is flying horizontally with a speed ?bird=73.9 km/h at a height ℎ=25.0 m above the sea. It is…
A: given h= 25 m
Q: A polka-dotted bowling ball is thrown horizontally off a cliff at 46 m/s. It takes 2.4 s for the…
A: Given Initial speed of the ball is v0=46 m/s Time taken by the ball to hit the ground is t=2.4 s…
Q: Two rocks are thrown horizontally off a 180 m cliff. One rock is thrown with a speed of 10 m/s and…
A: a) The time of flight for an horizontally launched rock is t=2hg=2180 m9.8 ms2=6.06 s The time of…
Q: You throw a baseball directly upward at time t = 0 at an initial speed of 12.3 m/s. What is the…
A: The initial velocity of the baseball, vi = 12.3 m/s The acceleration due to gravity, g = 9.80 m/s2…
Q: 3. A rock is thrown horizontally from a bridge with a velocity of 21.0 m/s. It takes the rock 2.8 s…
A:
Q: A roofer tosses a small tool to the ground. What minimum magnitude vo of horizontal velocity is…
A: For the tool to just miss the point B, total vertical distance travelled will be 1.2m+0.7m= 1.9m…
Q: Firefighters use a high-pressure hose to shoot a stream of water at a burning building. The water…
A:
Q: squirrel is resting in a tall tree when. slips from a branch that is 40 m above the ground. It is a…
A:
Q: Three identical balls are launched with the same initial speed from the top of a cliff overlooking…
A: The correct answer is: d. Equal for all three All three balls have the same initial height and…
Step by step
Solved in 2 steps with 2 images
- You're in an airplane that flies horizontally with speed 940 km/hkm/h (260 m/sm/s) when an engine falls off. Neglecting air resistance, assume it takes 28 ss for the engine to hit the ground. Find the height of airplane. H= Find the horizontal distance that the aircraft engine falls. d= If the airplane somehow continues to fly as if nothing had happened, what is the distance between the engine and the airplane at the moment the engine hits the ground? d=A physics book slides off a horizontal table top with a speed of 1.90 m/s. It strikes the floor after a time of 0.460 s. Ignore air resistance. A) Find the height of the table top above the floor. B) Find the horizontal distance from the edge of the table to the point where the book strikes the floor. C) Find the magnitude of the horizontal component of the book's velocity just before the book reaches the floor. D) Find the magnitude of the vertical component of the book's velocity just before the book reaches the floor. E) Find the magnitude of the book's velocity just before the book reaches the floor. F) Find the direction of the book's velocity just before the book reaches the floor in degreesA ball is kicked with an initial horizontal velocity of 16 m/s and initial vertical velocity of 10 m/s. What is the maximum height the ball goes above the ground? Use g = 10 m/s2.
- a guy is throwing pumpkins off a five story (15 meters high) building and wants the messiest result possible (highest velocity impact). a) he first throws a pumpkin downward at 45 degrees below the horizon at 15 m/s. how fast does the pumpkin hit the ground? at what angle does it hit? b) he then throws a second pumpkin upward with the same velocity 45 degrees above the horizon. how fast does the second pumpkin hit the ground? c) which strategy (throwing the pumpkin up or down) results in a higher velocity impact? think about why this might beAn archer shoots an arrow horizontally and his friend drops a marble from the same height when the arrow is released. In the absence of air resistance, which of the following happens? The arrow hits the ground first. The marble hits the ground first. O Both hit the ground at the same time. You cannot tell from the information given.A student drops a ball from a height of 68.0m. Determine all unknowns and answer the following questions. Neglect drag. How long did the ball remain in the air? unit What was the ball's speed just before striking the ground? unit
- A ball is kicked with an initial horizontal velocity of 16 m/s and initial vertical velocity of 10 m/s. What is the maximum height the ball goes above the ground? Use g = 10 m/s2.A projectile is thrown from the top of a 50m building with an initial speed of 10m/s and an angle of 35 degrees. Calculate the time to reach the ground and the velocity just before it strikes the ground.24. A shell is fired with a horizontal velocity in the positive x direction at a speed of 330 m/s from the top of an 80- m high cliff. The shell strikes the ground 1330 m from the base of the cliff. What is the magnitude of the velocity of the shell as it hits the ground? Hint: you need to determine horizontal and vertical components of the final velocity first, from the kinematic equations, then calculate magnitude of the velocity. While the horizontal velocity remains constant, the vertical velocity does not. You will need time of flight to determine the latter. 80 m 1330 m A) 4.0 m/s B) 9.8 m/s B) 9.8 m/s C) 82 m/s D) 170 m/s (E) 332 m/s
- You throw a ball up at some angle above the horizontal so that its velocity is (v0x, v0y). You then run 22.0 m forward on level ground and catch the ball 2.90 s later at the same altitude it was released from. a) How high above the release point did the ball reach? b) What was the horizontal component of the ball’s initial velocity, v0x? c) What was the vertical component of the ball’s initial velocity, v0y?Trajectory of a Ball Due in 10 hours, 30 minutes A ball is shot from the ground into the air. At a height of 9.40 m, the velocity is observed to be v = (8.30 m/s) i + (7.00 m/s) j. What is the maximum height that the ball will rise? Submit Answer Tries 0/10 What will be the total horizontal distance traveled by the ball? Submit Answer Tries 0/10 What is the x-component of the final velocity of the ball? Submit Answer Tries 0/10 What is the y-component of the final velocity of the ball when it lands back on the ground?Professional golfers can drive the ball over 200 m. While air resistance is significant, its effects are nearly canceled because lift is gained from backspin on the ball, and so a reasonable description of the ball’s trajectory is obtained if air resistance is neglected. Suppose a golfer hits a ball 200 m on level ground, giving it an initial velocity at an angle of 45o. The duration of the impact of the club and ball has been measured to be 1.00 ms. a) Calculate the velocity of the ball just after it is struck b) What is the 0.0450 kg ball's change in momentum?