If a 40000-kg asteroid falls to earth from a very great distance away, how much kinetic energy will it impart to our planet? You can ignore the effects of the earth's atmosphere. Express your answer using two significant figures. ? K = J

Q: A bride tosses a bouquet of flower through the air with a speed of 2.4 m/s, and it smacks one of her…

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Q: 1. For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m…

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Q: E) Listen You are travelling in a car at 82.5 m/s. If the car has a mass of 1,050.0 kg and you have…

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Q: The first car has twice the mass of a second car, but only half as much kinetic energy. When both…

A: Let , The first car mass = m1 second car mass = m2 Kinetic energy of 1st car = K1 Kinetic energy of…

Q: You throw a 20-NN rock vertically into the air from ground level. You observe that when it is a…

A: Given:                 weight of rock                               W= 20N             height to…

Q: The driver of an 1700 kgcar (including passengers) traveling at 30.0 m/s slams on the brakes,…

A: Part A The change in kinetic energy is equal to the amount of work done or the amount of energy lost…

Q: The first car has twice the mass of a second car, but only half as much kinetic energy. When both…

A: Kinetic energy: The kinetic energy of a moving body is defined by the equation,where  is the kinetic…

Q: A football of mass m = 1 kg is thrown at an initial velocity of v0 = 8 m/s at an angle of θ = 31°…

A: Mass of football= 1kg Velocity of football (vo) = 8m/s θ =31°

Q: If a Saturn V rocket with an Apollo spacecraft attached had a combined mass of 2.9 × 105 kg and…

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Q: A 2-kg brick is thrown downward from a height ?1 = 15 m to ?2 = 10 m. The initial kinetic energy of…

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Q: A spacecraft with a mass of 5000kg is in circular orbit 2000km above the surface of mars. How much…

A: This is a problem from Central forces.  The total energy a satellite has in a circular orbit is…

Q: A 0.6 kg box moves up a ramp with some initial speed. It reaches a vertical height of 3.5 m before…

A: Solution: Given: m = mass of box = 0.6 kg g = gravitational acceleration = 10 m/s2 h = height of…

Q: A 5-kg block moves along the x-axis. Its position changes with time as x=6-8t where x in meters and…

A: Given, mass of the block m = 5 kg x = 6-8t2    We know that velocity v is v=dxdtv=d6-8t2dtv=-16t m/s

Q: 01a. A curler pushes a 16 kg “rock" 5.04 m horizontally in 7.03 s using a horizontal force of 68.3…

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Q: A ball of mass 2.12 kg is tied to a string of length 4.15 m as shown in Figure P6.50. The ball is…

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Q: The box has a mass m = 11.2 kg and was lowered a height h = 41.7 cm. While the box was moving, the…

A: Given: m = 11.2 kg h = 41.7 cm = 0.417 m

Q: A 16.7 kg mass is thrown downward from a height of 18 m with a speed of 3.2 m/s. For the following…

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Q: A 23.0-kg file cabinet of is sliding down a frictionless ramp for a distance of 5.00 m as shown. Use…

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Q: A 0.23 kg apple falls from a tree to the ground, 4.0 m below. Ignore air resistance. Take ground…

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Q: A man carries a 12-kg chair from the first floor (which is 3.3 m above ground) to the second floor…

A: Given :- Mass = 12 kg  ∆h(change in height)= 6.6-3.3m= 3.3 m  g= 9.8 ms^-2 Soln P.E = mgh

Q: "A toy rocket, weighing 10 N, blasts straight up from ground level with a kinetic energy of 40 J. At…

A: GivenWeight of the rocket = 10 kinetic energy of the rocket at ground level, K = 40 Jtotal…

Q: Object A and object B have the same mass, object B is placed on the second floor, and object A is on…

A: Given:Object A on the 4th floor has greater gravitational potential energy than object B on the 2nd…

Q: You and your friends are converting your 1985 Toyota Tercel (mass = 1500 kg) into a spaceship. a)…

A: Given:mass of the car, m = 1500 kglet the acceleration due to gravity on the surface is g = 9.81…

Q: A 9.00 g bullet has a speed of 1.10 km/s. Part A What is its kinetic energy in joules? ▸ View…

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Q: A 3 kg ball falls from height of 14 m. What willbe potential energy of the ball after 1 second?  Use…

A: given data,  mass of the ball , m = 3 kg initial height , h = 14 m  gravitational acceleration , g =…

Q: Write an expression for the potential energy of a body of mass m placed at a height h above the…

A: Gravitational potential energy at a point is equal to the change in potential energy per unit mass,…

Q: y-4 m/s h2.18m An 84 kg snowboarder is coming down the hill and takes off from a jump. At one point…

A: mass of snowboarder is m = 84 kg The snowboarder is at a height of 2.18 m above the ground.…

Q: Ms. Spirito (mass 65kg) likes to travel to the Grand Canyon; she prefers the North Rim because it's…

A: given: m = 65 kg h = 2600m

Q: Which of the following statements are true? Select all correct.   Question 3 options:   Energy…

A: Energy has units of Joules, which can be written as kg m/s2. statement is incorrect.Joule is unit of…

Q: a skater moving at 3.0 m/s encounters a rough patch that reduces her speed by 45% due to a friction…

A: Initial speed of the person is u=3 m/s Final speed on rough patch is v=45% of u Friction force is…

Q: Passengers in a car are protected by what is known as a crumple zone, where they absorb energy…

A: Mass is Initial velocity is Final velocity is Note:Find:Kinetic energy absorbed by the crumple zone…

Q: How fast would an 87 kg man need to run in order to have the same kinetic energy as an 8.0 g bullet…

A: The kinetic energy of a body of mass m moving with velocity is given by, K=12mv2

Q: Same set-up for the conservation of energy was performed. The 5-g marble covered a horizontal…

A: Given: mass of the marble: m=5 g=0.005 kg Elevation of ramp: h=15 cm=0.15 m Horizontal distance…

Q: system of two objects has AKtot = 7 J and AUint = -5 J. How much work is done by interaction forces?…

A: total change in kinetic energy =total change inpotential energy =

Q: throw a ball vertically upward. When you let go of the ball, it has a kinetic energy K0 (assume the…

A: Kinetic energy = (1/2)mv2

Q: Problem 1: A block of mass 10 kg is being pulled in a straight line alone the ground by a 60 N force…

A: Given  Mass of object, M = 10 kg  Force, F = 60 N  Angle = 45 degree  Coefficient of kinetic…

Q: an öbject/bödy) för planet éarth. the escape velocity Start from the definition of Gravitational…

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Q: Laser light with a wavelength of 550.0 nm illuminates a pair of distant slits at normal incidence.…

A: Given in question -  Wavelength(λ) = 550.0 nm = 550×10-9 m…

Q: During the construction of a high rise condominium at Makati, a 45-kg block is vertically lifted 23…

A: Given data:  Mass (m) = 45 kg Height (h) = +23 m Required: The change in the gravitational potential…

Q: A 40 m long chain hangs freely from a ledge. Suppose the chain has a total mass of 800 kg. How much…

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Q: 0.8 0.6 0.4 0.2 0.25 0.50 0.75 1.00 Position, x (m) Force, F (N)

A: mass =  1.3 kg speed = 0.35 m/s at 0.27 m