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WUrR to receive maximum credit. etY, a rock of mass 3.00 kg dropped from a height...
A rock is dropped from the top of a vertical cliff and takes 3.00 s to...
A rock is dropped from the top of a vertical cliff and takes 3.00 s to reach the ground below the cliff. A secon rock is thrown vertically from the cliff, and it takes this rock 2.00 s to reach the ground below the cliff from the time it is released. With what velocity was the second rock thrown, assuming no air resistance? Select one: a. 5.51 m/s downward , b. 4.76 m/s downward X O c. 12.3 m/s downward...
A 56g rock was dropped from a height of 12 m. A) What is the force...
A 56g rock was dropped from a height of 12 m. A) What is the force of gravity acting on the rock? B) Air resistance on the rock during the fall is a constant upward force of 0.10 N. What is the net force acting on the rock? C) What is the net work done on the rock? Ignore negative signs in final answers (pick downwards as the positive direction) A cyclist hits a pedestrian, knocking them to the ground....
A package of mass 50 kg is dropped from a helicopter and experiences a drag force...
A package of mass 50 kg is dropped from a helicopter and experiences a drag force of 120 N due to air resistance. Find the resultant force and use it to calculate the acceleration of the package during the fall. Take the acceleration due to gravity as g = 9.81 m s-2 and give your answer in m s-2 to 1 decimal place. Answer: Answer m s-2
2. Suppose an object of mass 15 kg is dropped from a height near the surface...
2. Suppose an object of mass 15 kg is dropped from a height near the surface of the Earth, so the acceleration due to gravity is -9.8, and assume the drag due to air 0.47. Assume the object's position is measured in meters above the ground, so velocity (a) Write down, but do not solve, a differential equation whose solution would give resistance is proportional to the square of object's velocity, with drag coefficient γ and acceleration are both negative...
A ball of mass 0.200 kg is thrown straight upward. It reaches a maximum height of...
A ball of mass 0.200 kg is thrown straight upward. It reaches a maximum height of 5.00 mm above the point where it left the thrower's hand. Air resistance acts on the ball as it rises. −9.80J 9.80J zero not enough information is given to calculate the answer Part A How much work was done on the ball by the force of gravity during the time from when it left the thrower's hand to when it reached its maximum height?...
A parachutist whose mass is 65 kg drops from a helicopter hovering 1500 m above the...
A parachutist whose mass is 65 kg drops from a helicopter hovering 1500 m above the ground and falls toward the ground under the influence of gravity. Assume that the force due to air resistance is proportional to the velocity of the parachutist, with the proportionality constant b 20 N-sec/m when the chute is closed and b2 90 N-sec/m when the chute is open. If the chute does not open until the velocity of the parachutist reaches 25 m/sec, after...
A parachutist whose mass is 80 kg drops from a helicopter hovering 2500 m above the...
A parachutist whose mass is 80 kg drops from a helicopter hovering 2500 m above the ground and falls toward the ground under the influence of grevity. Assume that the force due to air resistance is proportional to the velocity of the parachutist, with the proportonality constant b,-30 N secim when the chute is closed and b2 100 N sec/m when the chute is open. If the chute does not open until the velocity of the parachutist reaches 20 m/sec,...
3.(adapted from Prob. 3, p. 103, Brown's Introductory Physics I) A baseball of mass m, is...
3.(adapted from Prob. 3, p. 103, Brown's Introductory Physics I) A baseball of mass m, is dropped at time t0 from rest (' 0) from the top of Alfred's Davis Memorial Carillon (which has height H) and falls freely under the influence of gravity. At the same instant (t 0), a second baseball of mass m, is thrown up from the ground directly below with speed vo2 (so if the second ball travels far enough, fast enough, they will collide)....
What are the Solutions to Part B of Chapter 2 of Tillery Physics 9th edition.......kinda pointless...
What are the Solutions to Part B of Chapter 2 of Tillery Physics 9th edition.......kinda pointless for you guys to only have the solutions that the book has already. 1. What was the average speed in km/h of a car that travels 400.0 km in 4.5 h? 2. What was the average speed in km/h of a boat that moves 15.0 km across a lake in 45 min? 3. How much would a 80.0 kg person weigh (a) on Mars,...
1. A pole is held vertically by attaching wires at a height of 13.4 m above...
1. A pole is held vertically by attaching wires at a height of 13.4 m above the ground. The other end of each wire is anchored in the ground at a distance of 9.54 m from the base of the pole. The pole makes a right angle with the ground. What is the length of each wire? 2. A bug crawls 2.25 m along the base of a wall. Upon reaching a corner, the bug's direction of travel changes from...
A rock is dropped from the top of a vertical cliff and takes 3.00 s to reach the ground below the cliff. A secon rock is thrown vertically from the cliff, and it takes this rock 2.00 s to reach the ground below the cliff from the time it is released. With what velocity was the second rock thrown, assuming no air resistance? Select one: a. 5.51 m/s downward , b. 4.76 m/s downward X O c. 12.3 m/s downward...
A 56g rock was dropped from a height of 12 m. A) What is the force of gravity acting on the rock? B) Air resistance on the rock during the fall is a constant upward force of 0.10 N. What is the net force acting on the rock? C) What is the net work done on the rock? Ignore negative signs in final answers (pick downwards as the positive direction) A cyclist hits a pedestrian, knocking them to the ground....
2. Suppose an object of mass 15 kg is dropped from a height near the surface of the Earth, so the acceleration due to gravity is -9.8, and assume the drag due to air 0.47. Assume the object's position is measured in meters above the ground, so velocity (a) Write down, but do not solve, a differential equation whose solution would give resistance is proportional to the square of object's velocity, with drag coefficient γ and acceleration are both negative...
A parachutist whose mass is 65 kg drops from a helicopter hovering 1500 m above the ground and falls toward the ground under the influence of gravity. Assume that the force due to air resistance is proportional to the velocity of the parachutist, with the proportionality constant b 20 N-sec/m when the chute is closed and b2 90 N-sec/m when the chute is open. If the chute does not open until the velocity of the parachutist reaches 25 m/sec, after...
A parachutist whose mass is 80 kg drops from a helicopter hovering 2500 m above the ground and falls toward the ground under the influence of grevity. Assume that the force due to air resistance is proportional to the velocity of the parachutist, with the proportonality constant b,-30 N secim when the chute is closed and b2 100 N sec/m when the chute is open. If the chute does not open until the velocity of the parachutist reaches 20 m/sec,...
3.(adapted from Prob. 3, p. 103, Brown's Introductory Physics I) A baseball of mass m, is dropped at time t0 from rest (' 0) from the top of Alfred's Davis Memorial Carillon (which has height H) and falls freely under the influence of gravity. At the same instant (t 0), a second baseball of mass m, is thrown up from the ground directly below with speed vo2 (so if the second ball travels far enough, fast enough, they will collide)....
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