A meteor starts from rest at a very great distance from the earth. Knowing that the radius of the earth is 6370 km and neglecting all forces except the gravitational attraction of the earth, determine the speed of the meteor (a) when it enters the ionosphere at an altitude of 1000 km, (b) when it enters the stratosphere at an altitude of 50 km, (c) when it strikes the earth’s surface.

Q: A space probe is to be placed in a circular orbit of radius 4000 km about the planet Mars. As the…

A: Solution: Given Data: ro=4000 kmMm=0.1074MerA=9004 kmrB=180004 km   To Find: The time needed for the…

Q: A 30 kg box with a height of 0.230 meters is on top of a 0.5-meter-high table and is initially at…

A: Given dataMass of box mb = 30kgHeight of the box h = 0.230mHeight of the box where it is places H =…

Q: A hockey player hits a puck so that it comes to rest 10 s after sliding 100 ft on the ice.

A: Given that, Time to come rest for puck, t=10 sec,Distance travelled during 10 sec of puck, s=100 ft…

Q: A girl throws a ball at an inclined wall from a height of 3 ft, hitting the wall at A with a…

A: Angular Velocity is the revolutionary or angular motion of a body. It is equal to the distance…

Q: A spacecraft is describing an elliptic orbit of minimum altitude h, = 2400 km and maximum altitude…

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Q: Packages are thrown down an incline at A with a velocity of 1 m/s. The packages slide along the…

A: Given data: *The velocity of the package incline at A is VA=1 m/s. *The velocity of the package on…

Q: The total drag due to air friction on a jet airplane traveling at 900 km/h is 35 kN. Knowing that…

A: According to the problem, the speed of the airplane is 900 km/h. Calculate the value of the speed of…

Q: A 1.62-oz golf ball is hit with a golf club and leaves it with a velocity of 100 mi/h. We assume…

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Q: An aircraft flying at a height of 800m with uniform horizontal velocity of 360km/hr releases a bomb…

A: Given Aircraft altitude = 800 m  Horizontal velocity = 360 km/hr = 100 m/s To find The time required…

Q: at an amusement park there are 200 kg bumper cars A, B, and C that have riders with masses of 40kg,…

A: Given: The mass of bumper cars, m = 200 kg The weight of the person sitting on car A, mA = 40 kg The…

Q: A spring-loaded device imparts an initial vertical velocity of 58 m/s to a 0.11-kg ball. The drag…

A: Mass m = 0.11 Kg Fd = 0.0021 V2             Initial Velocity V0 =58 m/s     To find out :- Maximum…

Q: 2. A skydiver dropped a block of wood at the same time she dove out of the plane. The skydiver has a…

A: Given: M = 85 kg m = 15 kg     a) Applying energy balance for block    Potential energy at A =…

Q: At an intersection, car B was traveling south and car A was traveling 30° north of east when they…

A: This problem will be solved by considering principle of conservation of momentum. The complete…

Q: A 1-kg block B is moving with a velocity vo of magnitude vo =2 m/s as it hits the 0.5-kg sphere A,…

A: Given: mass of the block, M = 1 kg The initial velocity block, Uo = 2 m/s The mass of sphere, m =…

Q: ENGIN 52 HW 9 The motor applies a constant downward force F = 1050 lb to the cable used to raise the…

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Q: A spring AB of constant k=200kn/m is attached to a support at A and to a collar of mass m=200 gm.…

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Q: During a flyby of the earth, the velocity of a spacecraft is 10.4 km/s as it reaches its minimum…

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Q: A parachutist is in free fall at a rate of 200 km/h when he opens his parachute at an altitude of…

A: Given Free fall speed = 200 km/h = 55.55 m/s Parachute opening height = 600 m Descends rate = 50…

Q: While cruising in level flight at a speed of 570 mi/h, a jet airplane scoops in air at a rate of 240…

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Q: 7900 kg RAIL INES 6800 kg PROBLEM 12.11 A tractor-trailer is traveling at 90 km/h when the driver…

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Q: A 1-kg block B is moving with a velocity v0 of magnitude v0 = 2 m/s as it hits the 0.5-kg sphere A ,…

A: Given data: Mass of block B is mB = 1 kg. Velocity of block B is v0 = 2 m/s. Mass of sphere is mA =…

Q: (a) What is her velocity relative to the surface of ice?  m/s (b) What is the velocity of the plank…

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Q: During the filming of an adventure movie, the 55.0-kg heroine makes a flying leap, grabbing her…

A: According to the question, the heroine of 55 kg mass makes an inelastic collision with the 70 kg…

Q: Freight car A with a gross weight of 182000 Ib is moving along the horizontal track in a switching…

A: Answer: (a) The common velocity of the two cars : V = 2.5958 mi/hr. (b) The loss of energy due to…

Q: A projectile is fired from the edge of a 150-m cliff with an initial velocity of 180 m/s at an angle…

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Q: Two spheres approach each other with constant velocities along rectilinear paths, as shown in figure…

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Q: A stone is thrown vertically upward from a point on a bridge located 40 m above the water. Knowing…

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Q: A 1.4-kg model rocket is launched vertically from rest with a constant thrust of 25 N until the…

A: Given Data: The mass of the model rocket M = 1.4 kg. The initial velocity of the rocket is u =0 The…

Q: At an amusement park there are 200-kg bumper cars A, B, and C that have riders with masses of 45 kg,…

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Q: 11. A 600-g ball A is moving with a velocity of magnitude 6 m/s when it is hit as shown by a 1-kg…

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Q: The 5.7-kg box has a velocity of 9 m/s at A. It slides on a rough surface from A to B (L=2.16 m,…

A: According to Bartleby guidelines, we are allowed to solve only the first 3 sub-part of a single…

Q: An airline employee tosses two suitcases with weights of 30 lb and 40 lb, respectively, onto a 50-lb…

A: Given data as per the question weight of baggage carrier =50 lb weight of suitcases =30 lb and 40 lb…

Q: A rocket weighs 2600 lb, including 2200 lb of fuel, which is consumed at the rate of 25 lb/s and…

A: Given, Weight of Rocket WR = 2600 lb Weight of Fuel WF = 2200 lb Rate of fuel combustion dW/dt = 25…

Q: A 0.0102-kg bullet is fired straight up at a falling wooden block that has a mass of 3.47 kg. The…

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Q: 3. Neglecting air resistance, determine the value of the firing angle a in degree. At a horizontal…

A: As given that the initial velocity of the fire = 14.63 km/min= 243.83 m/s ; Horizontal distance of…

Q: Coco Gauff is looking to return a tennis serve with a well executed forehand stroke.  The tennis…

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Q: Earth is rotating about the Sun in our solar system. The distance between the Earth and Sun is 1.5 x…

A: Given Data Mass of asteroid is :Ma=8.9×1015 kg Mass of earth is : ME=5.97×1024 kg Radius of earth…

Q: The rocket used to launch the 540-kg spacecraft of Prob. 14.95 is redesigned to include two stages A…

A: Given: mass of the space craft= 540 kg the space crafts includes two stages of masses  mA=mB=9.5 Mg…

Q: A space vehicle is in a circular orbit of 2200-km radius around the moon. To transfer it to a…

A: Given data as per the question Radius of circular orbit of space vehicle =2200 km mass of the moon =…

Q: A spacecraft is moving in gravity-free space along a straight path when its pilot decides to…

A: The mass flow rate of ejected burnt fuel is The speed of burnt fuel ejected is The initial mass of…

Q: A 500-kg spacecraft first is placed into a circular orbit about the earth at an altitude of 4500 km…

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Q: Three small spheres A, B, and C , each of mass m , are connected to a small ring D of negligible…

A: Let us the system consist of two-sphere A and B State-1 At the Instant cord DC Brakes Momentum of…

Q: 2000-kg automobile starts from rest at point A on a 6° incline and coasts through a distance of 50 m…

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Q: A spacecraft is placed into a polar orbit about the planet Mars at an altitude of 380 km. Knowing…

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.