A 5 gram bullet hits a tree at a velocity of 600 m/s and travels 4 cm inside the tree. How many N (Newton) is the average friction force that stops the bullet? (use the work-energy theorem)

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: A horse pulls a cart with a force of 40 lb at an angle of 30° above the horizontal and mi How much…

A: The solution is given below

Q: A 5.2 kg box has an acceleration of 2.1 m/s2 when it is pulled by a horizontal force across a…

A: Since you have asked multiple part question, so we will answer the first three parts for you.…

Q: When released, a 100-g block slides down the path shown below, reaching the bottom with a speed of…

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Q: Find the work done in joules by gravity as an object of the mass m=11 kg is raised up at constant…

A: Potential energy is defined as U=mgh Here m is mass, h is height and g is gravitational acceleration…

Q: 10 A man pulls a 20 kg box and the box moves with constant speed up a rough ramp as shown in the…

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Q: What is the work done by the moving force in Joules

A: Mass, m=7Kg Velocity, v=20m/s Height, h=8.75m

Q: A 20.0 kg crate, initially at rest, slides down a ramp 2.0 m long and inclined at an angle of 20°…

A: solution as

Q: A toy train accelerates from rest to 0.62 m / s in 21 ms. If the mass of the train is 875 g, what is…

A: ACCELERATION  OF TARIN a = 0.062 / 21 X 10-3 m / s2 = 2.95 m/ s2 mass = 0.857 kg v= 0.62 m/s power =…

Q: A 450 kg dragster accelerates from rest to a final speed of 120 m/s in 400 m (about a quarter of a…

A: mass of dragster = 450 kg Initial velocity = 0 m/s final velocity = 120 m/s distance moved = 400 m…

Q: Andy carries a sack of rice on his shoulder by applying a 250N force. Andy moves 8 m horizontally,…

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Q: A 1700 kg car coasts on a horizontal road with a speed of 23 m/s. a) How much work must be done by…

A: Given data: Mass (m) = 1700 kg Initial velocity (v0) = 23 m/s Final velocity (vf) = 17 m/s Required:…

Q: Matthew pushes a box of toys along a 5 m long ramp that is inclined 3 m high as shown in the figure…

A: Work done is defined as the product of the applied force and the displacement in the direction of…

Q: A 3 kg particle starts from rest at x = 0 and moves under the influence of a single force F= 10 + 5x…

A: The work done by a force F(x) on a particle as the particle moves from x = a to x = b, is given…

Q: A batter hit a 0.145kg baseball straight upward with an initial speed of 25.0m/s. Use the…

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Q: At what speed does a 1000 kg compact car have the same kinetic energy as a 2.00×10* kg truck going…

A: Given : mass of compact car, mc = 1000 kg             mass of truck, mt = 2.0 × 104 kg…

Q: Find the work done in joules by gravity as an object of the mass m=8 kg is raised up at constant…

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Q: A carpet which is 6 meters long is completely rolled up. When xx meters have been unrolled, the…

A:

Q: You throw a 20-N rock vertically into the air from ground level. You observe that when it is 15.0 m…

A: Given Data Weight of the rock is W=20 N Height of the rock from the ground is h=15.0 m Speed of the…

Q: A body of mass 2 kg is initially at rest on a horizontal frictionless plane. It is then pulled 4…

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Q: Questjon The total mechanical energy of a body in an isolated system and involves conservative force…

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Q: Find the work done in joules by gravity as an object of the mass m-12 kg is raised up at constant…

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Q: A parachute is used to slow a 3.1 kg model rocket from a speed of 32 m/s to 10 m/s. If the parachute…

A: Apply work-energy theorem on the parachute-rocket system, and solve for the work-done by the…

Q: Help me please

A: mass of beam (m) = 425 kg distance moved (d) = 117 m acceleration (a) = 1.8 ms2

Q: Suppose that 3 of work is needed to stretch a spring from its natural length of 30 cm to a length of…

A: Given: The work done d is 3 J from its natural length of 30 cm to 45 cm.   To find: The work is done…

Q: Find the work done in joules by gravity as an object of the mass m-8 kg is raised up at constant…

A:

Q: On a frozen pond, a 5 kg sled is given a kick that imparts to it an initial speed of vo - 2.2 m/s.…

A:

Q: A object 2 kg is moving in one dimension with a velocity given by  V(t)= 1 / 2 t^2  at t=4 s.…

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Q: A crane lifts a 650 kg beam vertically upward 6.6 m and then swings it westward 18 m. How much work…

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Q: C7 15.) A baseball (mass = 145 g) is thrown straight upward with kinetic energy 10.15 J. (a) When…

A: Given Data: The mass of a baseball is, m=145 g The initial kinetic energy of a baseball is,…

Q: A student slides her 67 kg desk across the level floor of her dormitory room a distance 8 m at…

A:

Q: A 17 g bullet is accelerated in a rifle barrel 81.5 cm long to a speed of 846 m/s. Use the…

A: It is given that, m=17 g=0.017 kgs=81.5 cm=0.815 mv=846 m/s

Q: A bodybuilder lifted a 1000 N weight 20 cm above his head as shown in the figure below. The athlete…

A: Given, weight, mg = 1000 Ndistance above his head, h = 20 cmheight of the bodybuilder, L =180 cmg =…

Q: A 10 kg barbell is rolling down a hill. There is no friction or air resistance acting on it, only…

A: Mass of the barbell is m = 10 kg Initial speed is u = 2 m/s Final speed is v = 7 m/s The only force…

Q: On an essentially frictionless, horizontal ice rink, a skater moving at 5.0 m/s encounters a rough…

A: Work Energy Theorem: It states that the change in kinetic energy of the particle is equal to the…

Q: The spring-flex exercise system consists of a spring with one end fixed and a handle on the other…

A:

Q: A truck of mass 3000 kg is to be loaded onto a ship using a crane that exerts a force of 31 kN over…

A: Given data: m=3000 kgd=2 mF=31 kN Need to determine the upward speed of the truck after 2m…

Q: A 18 kg sled starts up a 28 degree incline with a speed of 2.3 m/s. The coefficient of kinetic…

A: Drawing free body diagram for sled:-   Net force along vertical direction, ΣFy = Fn = mg cosӨ = 0…

Q: How much work is required to stretch a spring from x-4.5 cm to x-8.2 cm given a spring constant of…

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Q: Matthew pushes a box of toys along a 5 m long ramp that is inclined 3 m high as shown in the figure…

A: M= 20kg  L= 5m  h= 3m