Two identical stones are thrown from the top of a tall building. Stone 1 is thrown vertically downward with an initial speed of v, and stone 2 is thrown vertically upward with the same initial speed. Neglecting air resistance, how do their speeds compare on hitting the ground?

Q: iven: A bowling ball is dropped from the top of a building that has a height of h = 101 m. Assuming…

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Q: A man on a motorcycle plans to make a jump as shown in the figure. If he leaves the ramp with a…

A: In this case, we can use projectile motion concept because the biker is subjected to no other force…

Q: Suppose you are employed part time in the stock warehouse at a local Canadian Tire store. You work 5…

A: Work done = Force • displacement

Q: 2. A gun fires a bullet vertically upward. The bullet has a mass of 0.02 lbm and leaves the gun at a…

A: Given, Mass of bullet (m)= 0.02lbm  Initial velocity of bullet (u)= 2000ft/s

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Q: The world's fastest humans can reach speeds of about 11 meters per second. In order to increase his…

A: The maximum speed of the sprinter,

Q: A 14 kg penguin slides on its belly down an icy, frictionless glacier. If the penguin started from…

A: Write the given values of the problem- Mass=14 kg final speed(vf) vf=14 m/s

Q: A ball is dropped from 13.6 ft above the ground. Assume that air-drag is negligible in this case.…

A: GivenHeight h = 13.6 ftKnownAcceleration due to gravity g = 32.2 ft/s2

Q: A tennis ball with a mass of 0.05 kg is thrown directly upwards. If it initially has 4.7 J of…

A: Initial kinetic energy = 4.7 Joules acceleration due to gravity = 10 m/s2 mass of tennis ball = 0.05…

Q: A ball is dropped from 16.2 ft above the ground. Assume that air-drag is negligible in this case.…

A: Given data :- height H = 16.2 ft

Q: How much work is done to expand a 10-cm diameter cylindrical chamber at 1 atm from a length of 10 cm…

A: Hence, the work done is 79.58 J

Q: A 2.8 kg object is dropped, from rest, from a height of 15.5 m above the ground. Assuming…

A: Given that,Mass of an object :m = 2.8 (kg)Height : h = 15.5 (m)Here we need to find the kinetic…

Q: 102 kg man is skiing across level ground at a speed of 9.5 m/s when he comes to the small slope 1.4…

A: Given:- The mass of the person m = 102 kg  The speed of the skis at the ground level vg = 9.5 m/s…

Q: How long will it take a 742-kg car with a useful power output of 43.2 hp (1 hp equals 746 W) to…

A: Mass of car (M) = 742 kg  Output power of car = 43.2 hp  Power (P) = 43.2(746W) = 32227.2 W  Speed…

Q: A roller coaster is moving at 10 m/s at the top of the first hill (h= 63 m). Ignoring friction and…

A: Concept  Apply work energy theorem, Change is Potential Energy=Gain in Kinetic energy

Q: In the figure a block slides along a path that is without friction until the block reaches the…

A: Given,L = 0.77 mh = 1.4 mθ = 29°μ = 0.310vA = 8.3 ms

Q: A roller coaster is moving at 9 m/s at the top of the first hill (h= 60 m).  Ignoring friction and…

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Q: When a 0.25kg ball is suspended from a light 1.2m string, in the attachment below. The string makes…

A: Step 1:Step 2:

Q: If he leaves the ramp with a speed of 29.5 m/s and has a speed of 27.7 m/s at the top of his…

A: Useful formula: Kinetic energy of an object with mass M & speed v is Ek=12Mv2       ...(1)…

Q: The figure shows a 3.80-kg box being released from rest to slide down a frictionless track of height…

A:

Q: A 12.0 kg mass is dropped from a hot air balloon at a height of 345 m above the ground. Find it's…

A: Given : Mass dropped from the hot air balloon, m     =   12.0 kg Height at which the mass is…

Q: Two identical stones are thrown from the top of a tall building.Stone 1 is thrown vertically…

A: Given  Speed of stone 1 u =-v speed of stone 2 u'=v height h

Q: A 104 kg man is skiing across level ground at a speed of 8.3 m/s when he comes to the small slope…

A: Given that,                     initial velocity(vi)=8.3m/s                     mass of man(m)=104kg…

Q: A rectangular tank with a base 4 meters by 5 meters and a height of 4 meters is full of water. How…

A: Given data: The base area of the tank is A=4 m×5 m. The height of the tank is h=4 m. The density of…

Q: In a roller coaster the ride includes a vertical drop of 120 m. Suppose that the coaster  has a…

A: Given, Height of fall,h=120 m Speed at top,u=4 m/s

Q: A small block moves at point A with a speed of 7 m/s. Its path is without friction until it reaches…

A:

Q: A stunt man jumps from the top of a tall platform and into a swimming pool below. His potential…

A: Introduction: From the law of conservation of the energy remain constant, it can be transform from…

Q: A vehicle weighing 1000 kg goes downhill from 2000 feet to 1000 feet at a velocity of 60 mph. Which…

A: Given information: The mass of the vehicle (m) = 1000 kg The initial height of the vehicle (h1) =…

Q: A train weighing 120 tons is pulled up a 2% grade. The train resistance is constant at 12 lb/ton.…

A: Given that:

Q: You are designing a ski jump ramp for the next Winter Olympics. You need to calculate the vertical…

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Q: A rollercoaster car starts from rest at the top of a 31 m drop. It coasts down the first hill and…

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Q: A roller coaster is moving at 10 m/s at the top of the first hill (h= 40 m). Ignoring friction and…

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Q: The collar in the figure is smooth and has a mass of 2 kg. It is released from its unstretched…

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Q: As a block of mass 7 kilograms drops from the edge of a 40-meter-high cliff it experiences a loss of…

A: Given: The mass of the block is 7 kg. The height of the cliff is 40 m. The loss of energy due to air…

Q: If W(a) and W(g) are workdone on a person by air resistance and gravity respectively, during the…

A:

Q: An artillery shell is fired at a target 200 m above the ground. When the shell is 100 m in the air,…

A: In order to answer this issue, we must ascertain the artillery shell's velocity at the time of…

Q: ove the bar is 1.5 m/s.

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Q: at the top of the first hill (h= 53 m). Ignoring friction and air resistance, how high will the…

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Q: What is the kinetic energy of a 30 kg object travelling at 20 m/s? O 12 kJ O.12 kJ O 120 kJ O 12 kJ

A: Given data: Mass (m) = 30 kg Velocity (v) = 20 m/s Required: Kinetic energy (KE)

Q: A ski jumper starts from rest 40.0 m above the ground on a frictionless track and flies off the…

A: Given,Height of the track, h1 = 40.0 mthe track is at an angle of, 45°(above the horizontal)at an…

Q: A 2.8 kg object is dropped, from rest, from a height of 15.5 m above the ground. Assuming…

A: