Consider a situation where a constant force of 25 N acts on an object having a mass of 2 kg for 3 seconds. What is the work done by the force? O 150 J O 50 J O 75 J O undetermined-not enough information given O none of the above

Q: A force F(x) = (-5.0 x² +7.0 x) acts on a particle. (a) How much work does the force do on the…

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Q: A block of mass, m, is pulled over a distance, d, by an applied force, F, along a smooth horizontal…

A: Applied force = F Displacement = d Here force and displacement is in sane direction . therefore…

Q: A crane slowly lifts a 215 - kg crate a vertical distance of 19 m. V mg F W crane (a) How much work…

A: Given data:  Mass (m) = 215 kg Vertical distance (h) = 19 m Required: The work done by crane,…

Q: You are trying to move a crate with mass 22 kg from A to B onsite. You don't know the value of h,…

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Q: 7) A 200-g ball thrown vertically up with an initial speed of 20.0 m/s reaches a maximum height of…

A: A ball of mass (m) = 200g = 0.2kg Initial speed of the ball (u)= 20.0 m/sMaximum height  reached (h)…

Q: Give an example of a frictional force doing positive work

A: Frictional force: This force is act between two rough surface while movement. The frictional force…

Q: (a) What is the kinetic energy in joules of a 1010-kg automobile traveling at 77 km/h?  J (b) How…

A: Given: The mass of the automobile is 1010 kg. The speed is 77 km/h.

Q: two masses, M and 3M, are connected by a lightweight string which passes over an ideal pulley. the…

A: We are given the 2 masses. One is on horizontal surface and other is hanging vertically. We draw…

Q: As a ball falls under the influence of gravity, does gravity do positive work or negative work?…

A: Given data:  A ball falls under influence of gravity Required: The work done by gravity is negative…

Q: You are reshelving books in your dorm room. You lift a book from the ground to the top shelf. The…

A: According to the question, the kinetic energy at the ground and at the final height h(say), the…

Q: A body is moving horizontally under the action of a horizontal force 3x N, where x is the distance…

A: Given data-                         force acting on a body(F) = 3x  N   Explanation-…

Q: SITUATION 7: A factory worker pushes a 30-kg crate a distance of 4.5m along a level floor at…

A: Given data: Mass of crate (m) = 30 kg Distance (d) = 4.5 m Velocity is constant. Coefficient of…

Q: In the figure shown, if the mass (m-9 Kg) is moving with constant speed and traveled a distance d=16…

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Q: A force É = 12 N î - 10 N î acts on an object. How much work does this force do as the objęct moves…

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Q: In which case below is work not being done? Pushing a car a distance of 0.5 m. O Walking down a…

A: Pushing against an immovable wall is the correct answer

Q: 14) As the time needed to run up a flight of stairs deceases, the amount of work done by gravity; a)…

A: Given :  As the time needed to run up a flight of stairs decreases,  Find:- The amount of work done…

Q: The work done by kinetic friction can be. O Positive O Negative O zero Oany of the above

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Q: A block of mass 10 kg is moved 10 m to the right over flat ground. If the coefficient of kinetic…

A: The kinetic frictional frictional force acting on the block of mass m moving on a flat surface is…

Q: A friend makes the statement, “A force that is always perpendicular to the velocity of a particle…

A: When a body moves to some distance under the influence of force then the work is said to be done.…

Q: - A force of  F =(6i-2j) N acts on a particle, causing a displacement of d =(2i+3j) m. Find the work…

A: The work done by the force on any particle is defined as the dot product of Force vector and…

Q: I Review I Constants An 8.5 kg crate is pulled 5.4 m up a 30° incline by a rope angled 19° above the…

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Q: (a) What is the kinetic energy in joules of a 1030-kg automobile traveling at 90 km/h?  J (b) How…

A: The mass of the automobile is m = 1030 kg. The initial velocity of the automobile is u = 90 km/h.…

Q: A 2 kg rock is thrown upward, with a speed of 5 m/s and returns to the same spot, with the same…

A: Give Mass m = 2 kg Initial velocity is U = 5 m/s in upward direction.  Final velocity is V = 5 m/s…

Q: 17) Under the influence of a fore, an object of mass 4 kg accelerates from 3 m/s to 6 m/s in 8…

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Q: Identify a case where an object is moving over a surface with friction, but the frictional force…

A: When the object moves in a pure rolling motion, the work done by the friction will be zero.