You throw an apple straight up. The apple leaves your hand at time t = 0 moving at 5.50 m/s. Air resistance can be neglected. (a) How many times (two, one, or none) does the apple pass through a point 1.30 m above your hand? If the apple does pass through this point, at what times t does it do so, and is the apple moving upward or downward at each of these times? (b) How many times (two, one, or none) does the apple pass through a point 1.80 m above your hand? If the apple does pass through this point, at what times t does it do so, and is the apple moving upward or downward at each of these times?

You throw an apple straight up. The apple leaves your hand at time t = 0 moving at 5.50 m/s. Air resistance can be neglected. (a) How many times (two, one, or none) does the apple pass through a point 1.30 m above your hand? If the apple does pass through this point, at what times t does it do so, and is the apple moving upward or downward at each of these times? (b) How many times (two, one, or none) does the apple pass through a point 1.80 m above your hand? If the apple does pass through this point, at what times t does it do so, and is the apple moving upward or downward at each of these times?

Similar questions

While standing at the edge of the roof of a building, a man throws a stone upward with an initial speed of 5.89 m/s. The stone subsequently falls to the ground, which is 13.1 m below the point where the stone leaves his hand. At what speed does the stone impact the ground? Ignore air resistance and use g = 9.81 m/s2 for the acceleration due to gravity. impact speed: How much time is the stone in the air? elapsed time: m/s
An object is thrown straight upward with an initial velocity of 20.0 m/s j. Upon reaching the ground below, its velocity is -30.8 m/s j. From what distance above ground level was the object thrown?
An object is thrown vertically upwards with an initial velocity of +5 m/s and then comes back down. What is the final velocity when it returns to its initial height? Ignore air resistance.
A stone is thown from the top edge of a cliff with an initial speed of V0 = 15 m/s . The stone takes 3 seconds to each the bottom. What is the height of the cliff. (air resistance is negligible).
You throw a 19.6-N rock vertically into the air from ground level. You observe that when it is 10.0 m above the ground, it is traveling at 20.0 m/s upward. What is the rock's initial speed as it left the ground? 32.4 m/s O 14.0 m/s 24.4 m/s 30.4 m/s O 17.3 m/s
An attacker at the base of a castle wall 3.55 m high throws a rock straight up with speed 8.30 m/s from a height of 1.60 m above the ground. (a) Will the rock reach the top of the wall? Yes O No (b) If so, what is its speed at the top? If not, what initial speed must it have to reach the top? m/s (c) Find the change in speed of a rock thrown straight down from the top of the wall at an initial speed of 8.30 m/s and moving between the same two points. m/s (d) Does the change in speed of the downward-moving rock agree with the magnitude of the speed change of the rock moving upward between the same elevations? O Yes No (e) Explain physically why it does or does not agree.
An object is thrown upwards with a speed of 12 m/s. How long does it take to reach a height of 3.0 m above the projection point while descending? Neglect air resistance. 0.42 s 1.2 s 4.2 s 2.2 s 3.1 s
Omar throws a rock down with speed 8.5 m/s from the top of a tower. The rock hits the ground after 5.4 s. What is the height of the tower? (air resistance is negligible)
A ball is thrown upward from roof top, 90 m above the ground. The ball rises, then falls and hits the ground. Ignore air resistance. a) What is the initial velocity of the ball, if it takes the ball 9.4 s to hit the ground? b) What is the maximum height reached by the ball?
A stone is thrown horizontally with an initial speed of 10 m/s from the edge of a cliff. If the height of the cliff is 100 m, what is the time of flight of the stone if air resistance is negligibly small?
A ball is thrown straight up with initial speed 15.0 m/s and rises 11.5 m above the release point before returning to Earth. What initial velocity is required to make the ball rise twice as high? Ignore any effects due to air resistance.
An airplane needs to drop a package of supplies to a team in a remote location (landing is not possible). The plane is flying 112.8 m above the ground at a speed of 196.8 m/s. We know that the plane should NOT drop the package when it is passing directly over the location. Instead, the plane needs to drop the supplies BEFORE it reaches the location. How far out (in meters) should the supplies be dropped? (in other words, how far horiszontally will the package go as it falls?) Ignore air resistance.