The power delivered by a constant  force is given by P=F⃗·v⃗,  The power exerted by gravity as it pulls down on a car with a force of 10kN while the car is traveling on a horizontal road with a speed of 20m/s is closest to which value?

Q: a In the figure, a horizontal force of magnitude 18.0 N is applied to a 3.01 kg book as the book…

A:

Q: A helicopter lifts a 71 kg astronaut 12 m vertically from the ocean by means of a cable. The…

A:

Q: A helicopter lifts a 80 kg astronaut 20 m vertically from the ocean by means of a cable. The…

A: (a). The work done by helicopter is

Q: An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and…

A: Mass of an asteroid = 5.5Initial speed of asteroid = 7000 m/sFinal speed of asteroid = 5500…

Q: A river descends 15 m through rapids. The speed of the water is 3.2 m/s upon entering the rapids and…

A:

Q: with bricks has a total mass of 18.8 kg and is pulled at constant speed by a rope inclined at 19.0°…

A:

Q: A cable exerts a constant upward tension of magnitude 2.54 × 10“ N on a 2.40 x 10° kg elevator as it…

A: Work done=FdcosθF is tension force=2.54×104 Nd is vertical distance=3.10 mθ is angle between force…

Q: Shown below is a 59 kg crate that is pushed up a 30° incline by the horizontal force F. The…

A: GivenShown below is a 59 kg crate that is pushed up a 30° incline by the horizontal force F. The…

Q: A 68 kg bicyclist rides his 8.5 kg bicycle with a speed of 14.7 m/s. (a) How much work must be done…

A: a) The total mass of the system is M=m+m'=68.5kg+8.5kg=76.5kg Using work-kinetic energy theorem, the…

Q: Consider a system of a cliff diver and the Earth. The gravitational potential energy of the system…

A: Given that gravitational potential energy of the system decreases by 26,000 J so that PE=26000 J…

Q: A shopper in a supermarket pushes a cart with a force of 55 N directed at an angle of 35° downward…

A: (A) work done by the shopper- force F=55 N,   angle=35 degrees, length d=90 m   work done is given…

Q: A single force acts on a 3.0 kg particle object whose position is given by x= 3.0t-4.0t^2+.5t^3,…

A: The mass of the particle m=3.0 kg The position of the particle x=3.0t-4.0t2+.5t3 The velocity of the…

Q: A crate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.52 m/s. The pulling…

A:

Q: A 50 kg trunk is pushed 6.0 meters at constant speed up a 30 degree incline by a constant horizontal…

A:

Q: A 300 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 3.0 N/cm…

A:

Q: a In the figure, a horizontal force F of magnitude 20.0 N is applied to a 2.91 kg book as the book…

A:

Q: A crate of mass 20.0 kg is pushed up a rough incline, which makes an angle of 25° with the…

A: Given data: -  The mass of the crate is m = 20.0 kg. The angle of the rough incline is θ = 25o. The…

Q: helicopter lifts a 80 kg astronaut 17 m vertic (a) How much work is done on the astr (b) How much…

A: GivenMass of Astronaut, m=80 kgDistansed moved vertically, d=17 mAcceleration of Astronaut, a=g10

Q: An object with mass ? = 2 ?? is released from rest at a height ℎ = 6 ? from the top of an inclined…

A:

Q: A 40 kg crate filled with books is pushed along the floor by exerting a force of 227 N at an angle…

A:

Q: A helicopter lifts a 87 kg astronaut 19 m vertically from the ocean by means of a cable. The…

A:

Q: The engine of a Honda Civic has a power of 1.32 x 105 W (176.88 hp).   a) How much work does this…

A: Power is defined as the energy transferred per unit time. Since this energy is consumed in work…

Q: The blades in a blender rotate at a rate of 6200 rpm. When the motor is turned off during operation,…

A:

Q: stant 600 N. As she steps onto the scale, the force pushing down on the top of the spring varies…

A: Solution: When a spring of spring constant k is compressed or elongated a distance x from the…

Q: A sledge loaded with bricks has a total mass of 19.0 kg and is pulled at constant speed by a rope…

A:

Q: A crate is given a push across a horizontal surface. The crate has a mass m, the push gives it an…

A: Given mass of the crate = m Initial speed =  3.30 m/s Coefficient of kinetic friction = 0.115 We…

Q: A worker pushes a wood crate of mass 14 kg across a rough concrete floor with a constant horizontal…

A:

Q: A 941 kg elevator carries passengers with combined mass of 455 kg as it ascends at constant speed of…

A:

Q: A crate with a mass of 46.0 kg is pushed with a horizontal force of 150 N. The crate moves at a…

A: mass of crate (m) = 46 kg horizontal force (F) = 150 N distance moved = 5.50 m speed = constant

Q: A 350 g block is dropped onto a relaxed vertical spring that has a spring constant of k= 4.6 N/cm…

A:

Q: A one-dimensional variable force in the x-direction is given as F(x) = 2 x 2.29i where Fis in…

A: The one-dimensional variable force is given as, F→x = 2x2.29i^ The mass of the object is given as, m…

Q: A horizontal force ?⃗?of magnitude 21.0 N is applied to a 3.12 kg book as the book slides a distance…

A:

Q: A mechanic pushes a 2.00 x 103-kg car from rest to a speed of v, doing 5,220 J of work in the…

A: Given Data: The mass of a car is, m=2.00×103 kg The work done is, W=5220 J The distance covered by a…

Q: Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 95.0 kg, down a…

A:

Q: 18.0 N is applied to a 3.06 kg book as the book slides a distance d = 0.32 m up a frictionless ramp…

A:

Q: A helicopter lifts a 65 kg astronaut 18 m vertically from the ocean by means of a cable. The…

A: F   to denote the upward force exerted by the cable on the astronaut. The force of the cable is…

Q: A 65.70 kg baseball player begins his slide into second base when moving at a speed of 6.090 m/s.…

A: Mass of the player, m = 65.7 kg Initial speed, u = 6.09 m/s Final speed, v = 0 m/s   From the…

Q: You kick a 225 g rock from the edge of a cliff while hiking along the edge of the Grand Canyon. (a)…

A: Given: Rock mass m =225 g = 225×10-3 kg Time t1 =4 s

Q: The force acting on a particle varies as shown in Figure 18 P 7.14. Find the work done by the force…

A:

Q: A man does 4,800 J of work in the process of pushing his 2.40 x 103 kg truck from rest to a speed of…

A: