A rope exerts a force F⃗ on a 20.0-kg crate. The crate starts from rest and accelerates upward at 5.00 m/s2 near the surface of the earth. What is the kinetic energy of the crate when it is 4.0 m above the floor ?

Q: 6. A 25.0 kg object is accelerated from rest through a distance of 6.0 m in 4.0 s across a level…

A: Work done in moving an object is given by,W= F×d×cosθ......(1)where, F is force applied…

Q: Pilings are driven into the ground at a building site by dropping a 1950 kg object onto them. What…

A: The change in gravitational potential energy with change in height from ground can be expressed as;…

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

A: The friction force can be given as, Ff=-μmgma=-μmga=-0.119.8 m/s2=-1.078 m/s2 Use the equation of…

Q: A pole vaulter clears the bar at a height of 5.4 m, and then falls to the safety mat. The change in…

A:

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 0.800-kg particle has a speed of 1.60 m/s at point A and kinetic energy of 7.30 J at point B. (a)…

A: (a).The kinetic energy at A is

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: Sam, whose mass is 75 kg , straps on his skis and starts down a 64 m -high, 20 degrees frictionless…

A: The given values are, m=75 kgh=64 mθ=20°F=200 N

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

A: Potential energy, U = 28000 J  height, h = 31 m

Q: A 240-kg roller coaster reaches the top of the steepest hill with a speed of 5.60 km/h. It then…

A:

Q: A 21-kg child starts from rest and slides down a slide that is 3.9 m high. At the bottom of the…

A: From the theorem of work-kinetic energy, we have the net work done equal to the change that occurs…

Q: A worker pushes a wood crate of mass 23.4 kgacross a concrete floor witha constant horizontal force…

A:

Q: Figure shows a 0.51-kg block sliding from A to B along a frictionless surface curved path. When the…

A: It is given that, m=0.51 kgKA=27 JhA=10 mhB=6 m

Q: A basketball player makes a jump shot. The 0.600-kg ball is released at a height of 2. 14 m above…

A:

Q: A 4.20-kg box has an acceleration of 2.10 m/s² when it is pulled by a horizontal force across a…

A: " As per our company policy we can answer only 3 subparts. To get the solution of remaining part…

Q: Mark pushes his broken car 190 mm down the block to his friend's house. He has to exert a 160 NN…

A: distance moved = 190 m force exerted = 160 N speed = constant

Q: power

A: Given: Mass of the dragster = 650 Kg initial speed = 0 final speed = 110 m/s Distance= 400 m…

Q: Pilings are driven into the ground at a building site by dropping a 1950 kg object onto them. What…

A: Data Given ,  Mass of object ( m ) = 1950 kg Initial height from where object  released ( h1 ) = 18…

Q: 10. A box of mass 7.60 kg is pulled from rest up a 46.5 m long incline that makes an angle of 22.0°…

A:

Q: A 0.41-kg particle has a speed of 3.0 m/s at point A and kinetic energy of 8.0 J at point B. (a)…

A: (a) Calculate the kinetic energy at point A. KEA = 0.5*m*vA2          = 0.5*0.41*32       = 1.85 J

Q: Mark pushes his broken car 150 m down the block to his friend’s house. He has to exert a 110 N…

A:

Q: Betty weighs 420N and she is sitting on a playground swing seat that hangs 0.53m above the ground.…

A:

Q: Karen lifts a 10.0 kg box up from the ground to a height of 1.50 meters. He then lowers the box to…

A: Mass of the box m = 10.0 kg Initial height hi = 1.50 m Final height hf = 0.630 m

Q: A slingshot will shoot a 10.0-g pebble 22.0 m straight up. (a) How much potential energy is stored…

A:

Q: 18. A 25 kg bear slides, from rest, 12 m down a lodgepole pine tree, moving with a speed of 5.6 m/s…

A:

Q: A 0.32-kg particle has a speed of 5.0 m/s at point A and kinetic energy of 8.4 J at point B. (a)…

A: Given: The mass of the particle is m=0.32 kg, The velocity of the particle at point A is vA=5.0…

Q: A 0.59-kg particle has a speed of 5.0 m/s at point A and kinetic energy of 8.5 J at point B. (a)…

A: Given Data:- The mass of the particle is m = 0.59 kg. The speed of the particle at point A is vA =…

Q: 3. a) A 45 g mouse with a kinetic energy of 5.0 J is fleeing a cat. Calculate the speed of the…

A: We are given mass of mouse and  its kinetic energy. We hence find the speed of mouse. We then are…

Q: Samantha pushes a 113 kgkg crate on a ramp that makes 8.59 degreesdegrees with the horizontal. What…

A:

Q: 60. A 2.0-kg block starts with a speed of 10 m/s at the bottom of a plane inclined at 37° to the…

A: Given, Initial velocity, u=10 m/s, Final velocity, v=0 m/s, Coefficient of friction, μk=0.30, and…