How much work is needed for a 73-kg runner to accelerate fromrest to 7.7 m>s?

Q: What is the work done by the force pulling a block 1 meter with two 0.5 kg masses on it?

A: We know, Workdone=Force ×displacement

Q: A worker pushes horizontally on a large crate with a force of 250 N, and the crate is moved 3.0…

A: A worker pushes horizontally on a large crate with a force of 250 N, and the crate is moved 3.0…

Q: How much work is done when you apply a horizontal force of 47N to push a 35 kg box 8.0 meters down…

A: Given data:  Horizontal force (F) = 47 N Displacement (d) = 8.0 m Required: Work (W)

Q: A light aircraft that weighs 1600 N is accelerated at 8m/s/s for 15 seconds. The work done on the…

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Q: It takes a force of 35 N to stretch a 45-cm spring to 90 cm and hold it there. How much work was…

A: Given The force to stretch the spring is F=35 N. The initial length of spring is xi=45 cm. The…

Q: A car weighing 1500 kg is accelerated from a steady state to a speed of 10m / s in 3s. Find the work…

A: Given: The mass of the car is 1500 kg. The final speed of the car is 10 m/s. The time taken by the…

Q: A warehouse employee is pushing a 10.0 KG desk across the floor at a constant acceleration of 10m/s.…

A: Solution: Given that mass, m =10 kg acceleration, a =10m/s2 distance, d=100 m

Q: A 220-kg motorcycle is cruising at 14 m>s. What is the total work that must be done on…

A:

Q: How much work has to be done to accelerate 1320kg car from 115km/h to 130km/h ?

A: Given data:  Mass of car (m) = 1320 kg Initial velocity of car (Vi) = 115 km/h Final velocity of car…

Q: A 1500 kg car accelerates from a uniformly stationary state at a speed of 10m / s in 3s. Find the…

A: Write the variable with the given values.

Q: A racecar of mass 550 kg is heading into the racetracks  at a speed of 15.0 m/s. How much work is…

A: Given that:- Mass of race car=550kg

Q: A bag of wheat weight 330 kg .To what height should it be raised so that potential energy is 7800J?…

A: Given data:  Mass (m) = 330 kg Potential Energy (PE) = 7800 J g = 9.8 m/s2 Required: Height (h)

Q: You push a table through 3m with a force of 30N. How much work have you doneon the table? The table…

A: The expression for work done is, W=F×d       (I)              F=force,d=displacement

Q: A 9.0 kg rock is dropped from a height of 9.0 m. At what height is the rock's kinetic energy twice…

A:

Q: If is takes 500 J of work to stretch a spring 8.00 cm, what is the spring constant?

A: Given data: Work (W) = 500 J Stretch in spring (x) = 8.00 cm Required: The spring constant (k)

Q: A 6.0-kg rock is dropped from a height of 21.0 m. At what height is the rock's kinetic energy twice…

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Q: what rate of work is developed by a 50.0 kg jogger who runs around a 1.00 km track three times in…

A:

Q: A race car travelling on a straight and flat stretch of track must overcome 1.5 kN of resistance to…

A: Given : F = 1.5 kN = 1.5 x 103 N v = 190 km/hr = 190 x 1000/3600 = 52.78 m/s

Q: How much work is done against the gravitational force on a 5.0-kg briefcase when it is carried from…

A: Since,breifcase is being carried to some height ,it acquires some potential energy.Hence,Work done…

Q: A ball was launched upwards and vertically at a speed 3 m/s up to a height 4 m. What the work done…

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Q: Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?

A: m = 1500 kg  v = 60 km/h = (60 *518)m/sec v = 16.66 m/sec

Q: Calculate the work done A car of weight 20000N climbs up a hill at8m/s speed. Gaining a height of…

A: Given : velocity=8m/s Weight = 20,000 N height=120 m time=100s g=10 m/s² Weight = mg Mass =…

Q: How much net work must be done to accelerate a 1000 kg 20 m / s to 30 m / s?

A: According to the work energy theorem, the work done must be equal to the change in kinetic energy.…

Q: a box of mass 3.5 kg being accelerated along the floor at 3.9 m/s2. If this block is being…

A: Given data- Mass of box =3.5 kg Acceleration a=3.9 m/s2 Initial velocity Vi=0 m/s (rest) Time period…

Q: If you walk 5.0 m horizontally forward at a constant velocity carrying a 10-N object, the amount of…

A: The amount of work by you is Zero.

Q: A 110-kg person climbs some stairs at a constant rate, gaining 2.8 meters in height. Find the work…

A: The person is doing work against gravityThe Mass of person = m = 110 kgHeight accomplished = h = 2.8…

Q: How much work is done by gravity when dead lifting a 100.0 kg barbell 81.54 cm from the floor to hip…

A:

Q: Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 70 km/h ?

A: Given data:  Mass (m) = 1500 kg Initial velocity (Vi) = 70 km/h Final velocity (Vf) = 0  Required:…

Q: Uncompressed, the spring for an automobile suspension is 45.0 cm long. It needs to be fitted into a…

A: Potential energy of a spring is defined as the energy stored in it when the spring is displaced from…

Q: How much work (in J) is done in raising a 44.9 kg crate a distance of 1.5 m above a storeroom floor?

A: Given : Mass of crate is 44.9 kg             Distance is 1.5 m above a storeroom floor

Q: What is the kinetic energy of a 3000-lb automobile moving at 55.0 mi/h?

A: Here given that the mass of a automobile is 3000 lb also given that the velocity of that automobile…

Q: How much work did the movers do (horizontally) pushing a 46.0-kg crate 9 m across a smooth floor…

A: Given Mass of the object  (m) = 46 kg Distance traveled = 9m

Q: A 1500kg automobile accelerated from 10km/hr to 140km/hr. How much work in KJ does this require?

A:

Q: At what height is the rock's kinetic energy twice its potential energy?

A: Mass of rock , m = 2.0 kg Height from which rock is dropped , H = 21.0 m

Q: The horse exerts a backward force of 2645N for a forward distance of 25m. How much work is done?

A: Write the expression for work done.

Q: A horizontally directed force of 10 N is used to pull a box a distance of 2.6 m across a tabletop.…

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Q: m above the groun

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Q: A 5.0-kg cart is moving horizontally at 4.0m/s. In order to change its speed to 10.0m/s, the net…

A:

Q: How much work must be done by frictional forces in slowing a 1000 g car the velocity from 400 cm/s…

A: Given data The mass of the car is m=1000 g=1 kg The initial speed is u=400 cm/s=4 m/s The final…

Q: If a block isnloaded with two 0.5 kg masses, with the spring pulling it at 30° above the horizontal,…

A:

Q: How much work is required to life a 6.0-kg backpack 1.5m to put it on?

A:

Q: ) How much work is done when a 50N a Floor pushed along distance 10 m?

A: Given data :- Force F = 50 N displacement d = 10 m

Q: How much work has to be done to accelerate 1320kg car from 105km/h to 120km/h?

A:

Q: How much net work is required to accelerate a 1000-kg car from 20 m/s to 30 m/s? x 105 joules

A: Given data: Mass (m) = 1000 kg Initial velocity (v0) = 20 m/s Final velocity (v) = 30 m/s Required:…