A 5.0-kg box is moving horizontally at 6.0 m/s. In order to change its speed to 10.0 m/s, the net work done on the box must be: 40 J 90 J 160 J 400 J

Q: If a 0.50 kg ball is moving at a speed of 12 m/s what is the kinetic energy of the ball? Equation is…

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Q: A 35 kg child climbs a 6.00 m long slide that is inclined 30° with the horizontal. What is the…

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Q: An 80-N crate slides with constant speed a distance of 5.0 m downward along a rough slope that makes…

A: Data provided :  Weight of the crate(mg) = 80 N, downward  Distance along rough slope = 5 m Angle…

Q: 5-kg box is being pushed on a horizontal floor with a force of 30 N at a constant speed of 14 m/s.…

A: Work done = Force × displacement

Q: The kinetic energy of a car is 8 x 10° J as it travels down the road. How much work is required to…

A: Initial kinetic energy of the car, Ei=8×106J

Q: If a person moves a trolley for a distance of 10 m with a force of 50 N, then the work done is: A)…

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Q: A 5.0 N force is applied to a 2.0 kg object initially at rest. The force was removed after the…

A: Given data: Force (F) = 5.0 N Mass (m) = 2.0 kg Initial velocity (v0) = 0 m/s Displacement (d) = 2.5…

Q: What is the work required to raise a 200 kg barbell to a height of 1.25 m? O 2 500 J O 1755 J O 3…

A: Write the expression for the work done to raise a barbell. Here, m represents the mass, g…

Q: A 5.0-kg cart is moving horizontally at 4.0 m/s. In order to change its speed to 9.0 m/s, the net…

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Q: A sled of mass 70 kg starts from rest and slides down a 10° incline 80 m long. It then travels for…

A: Given Data: The mass of the sled is, m=70 kg The length of a horizontal sled is, l=20 m   The…

Q: a 1.60 m tall person lifts a 1.65 kg book off the ground so it is 2.20 m above the ground. what is…

A: Given Data Height of the person is h=1.60 m Mass of the book is m=1.65 kg Final height of the book…

Q: What is the potential energy of a bungee jumper standing on a 0.109 km bridge that weighs 85 kg?…

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Q: A block of mass m= 5 kg is pulled along a frictionless horizontal path by a force F = 2 N making an…

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Q: A horizontal force of 200 N is applied to move a 55 kg television set across a 10 m level surface.…

A: The work done by a force F to move a object by a distance x in the direction of force (θ=0°) is…

Q: How many joules of work are done on a box when a force of 25 N pushes it 3 m? a 1J b. 3 J c. 8 J 275…

A: Given : Force (F) = 25 N Displacement (d) = 3 m

Q: What is the kinetic energy of a 1400 kg car traveling at 5.3 m/s? A. 7.4 x 103 J B. 2.0 x 104 J…

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Q: Ruth is moving a heavy box a distance of 14 m across the floor of her bedroom. If she does 9000 J of…

A: total distance moved = 14 m work done = 9000 J time taken = 3 seconds

Q: A truck travelling at a speed of 50 km/h has a kinetic energy of 600 kl. If the speed of the truck…

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Q: A ball of 0.1 kg is dropped from rest. When it falls through a distance of 2 m, the work done by the…

A: The expression for work done is, W=F×d                                    F=force,d=dispalcement…

Q: A 34.7 kg child rides a 5.30 kg toboggan down a 13.1 m high snowy hill. If the child starts from…

A: Given,

Q: What is the potential energy of a 15 kg dumbbell sitting on a weight bench 0.65 m above the floor?…

A: Given that, Mass of a dumbbell, m = 15 kg It is placed on a bench 0.65 m above the floor. We need to…

Q: A 5.0-kg cart is moving horizontally at 4.0 m/s. In order to change its speed to 6.0 m/s, the net…

A: Given: Mass of cart m=5.0 kg Initial speed u=4.0 m/s Final speed v=6.0 m/s To find net work done in…

Q: A force of 25.0 N is exerted upwards on an object to lift it a distance of 3.20 m. What is the total…

A: work is component  of the applied force is in direction of displacement .   in this question  we…

Q: 0.170 kg hockey puck was sliding across the ice at 1.5 m/s. Estrella pushed the puck in the same…

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Q: What is the potential energy of an acorn falling out of a tree 20 meters above the ground that has a…

A: Given value--- height = 20 m. weight of acorn = 23.7 N. We have to find--- potential energy?

Q: What is the potential energy in J of a bungee jumper standing on a 0.109 km bridge that weighs 85…

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Q: Q45) A 8 kg box is moving horizontally at 6 m/s. To change its speed to 10 m/s, the net work done on…

A: Given a box of mass m=8 kg which is moving horizontally with a velocity of v1= 6 m/sec. Its speed is…

Q: A horizontal force of 5 N is required to maintain a velocity of 2 m/s for a block of 10 kg mass…

A: Given data : Force=F Mass=m time=t Velocity=V   TO FIND : Work done

Q: How much work is done when a 4kg block of ice is moved from rest to a speed of 5m/s?   A. 50 J…

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Q: A student carries a bag weighing 5 kg from the ground floor to his class on the first floor that is…

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Q: A 4 kg object is moving horizontally with a speed of 5 m/s. To increase its speed to 10 m/s, the…

A: As object is moving horizontally, potential energy will remain constant. From work energy theorem,…

Q: block of mass 0.40 kg moves in a straight line as shown in the figure. Suppose its speed is 5.00 m/s…

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Q: A 70 kg person climbs a 2.0 m high flight of stairs within 8 seconds when he walks and 2 seconds…

A: Given data: Mass (m) = 70 kg Height (h) = 2.0 m Time taken in walks = 8 seconds Time taken in runs…

Q: Using 1000. J of work, a small object is lifted from the ground floor to the third floor of a tall…

A: Given parameter                        Work(W) = 1000J                        Time (T) = 20s

Q: (2î + j + K) N. Work done by the force is (a) 2 J 16 J (b) 4 J (d) 8 J

A: Work is the product of the component of the force in the direction of the displacement and the…

Q: A 0.300-kg football is thrown through the air. At a height of 1.71 m above the surface of Earth, it…

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Q: An accelerating object of mass m=11 kg is fired with an initial speed vi=6 m/s at a starting point.…

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Q: A spring with a spring constant of 11 N/m is stretched from equilibrium to 2.9 m. How much work is…

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Q: An 72-kilogram cliff diver is standing on a cliff that is 25 meters high. What is his potential…

A: Solution

Q: A ball with a mass of 2.20 kg is moving with velocity (5.60î – 1.20j) m/s. (HINT: v2 v.) = V. (a)…

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Q: A 2500 kg car accelerates from rest to a velocity of 30.0 m/s in 8.00 seconds. The work done by the…

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Q: A 3kg book is tossed across the room at a speed of 5m/s. What is the Kinetic energy of the book?…

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Q: A car travelling at a speed of 60 km/h has a kinetic energy of 200 kJ. If the speed of the car is…

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Q: A truck travelling at a speed of 80 km/h has a kinetic energy of 1000 kJ. If the speed of the truck…

A: Kinetic energy of an object is measure of energy attained by the object due to its motion. It…

Q: If gravity is pulling a 0.15 kg ball down 2.0 meters, what is the magnitude of the force doing work…

A: Given: The mass is 0.15 kg. The distance covered is 2.0 m.

Q: A 5-kg sled has a potential energy of 6500 J at position A above the ground. When the sled strikes…

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Q: A 40-kg person is climbing 3 m up a flight of stairs in 6 seconds. How much work did they do…

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Q: A 1.6 m tall man lifts 2.1 kg box from the ground to a height 2.2 m above the ground. What is the…

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Q: A 1.60-m-tall person lifts a 1.65-kg book off the ground so it is 2.20 m above the ground. What is…

A: Given data:  Mass (m) = 1.65 kg Height (h) = 2.20 m Required: Potential Energy (U)