A sked is initially given a shove up a frictionless 23.0o incline. It reaches a maximum vertical height 1.22 m higher than where it started at the bottom. What was its initial speed?

Q: ohn, of mass 82.4 kg can do work for about 2.0 minutes at the rate of 1.0 hp. How long will it take…

A: Given data: Mass (m) = 82.4 kg Power (P) = 1.0 hp Height (h) = 12.0 m 1 hp = 746 watts Required:…

Q: (II) What is the minimum work needed to push a 950-kgcar 710 m up along a 9.0° incline? Ignore…

A: Given data The mass of the car is m = 950 kg. The distance covered by the car is d = 710 m. The…

Q: A particle was subjected to a force Fx that varies with position as described by F =…

A:

Q: A 1000N block was pushed by a force P of 1500N up an incline upward to the right at a slope of 3…

A:

Q: A student weighing 551 N climbs at constant speed to the top of an 14 m vertical rope in 17 s. What…

A:

Q: In the figure, a constant force Fa of magnitude 83.0 N is applied to a 3.0 kg shoe box at angle o =…

A: Given data F=83 Nϕ=530h=0.35

Q: When released from a height ofh3= 14.00 m, a 344.00 g block slides down the path shown below,…

A: given , height , h = 14.00 m mass of the block , m = 344 .00 g =0.344 Kg final speed , v = 11.00 m/s…

Q: The loaded cab of an elevator has a mass of 3.50 × 10³ kg and moves 244. m up the shaft in 18.0 s at…

A:

Q: A 25 kg sack of rice is lifted 1.25 m above the floor for 50 sec. The rate at which work is done on…

A: Given Data: mass (m) = 25 Kg Height (h) = 1.25 m Time (t) = 50 s

Q: A skier of mass 64 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: Given:Mass of the skier, m = 64 kgSlope = 30 degreesConstant velocity of the skier upto the slope, v…

Q: In scaling a vertical wall, spiderman needs 3.1 kW of power to maintain a speed of 4.5 m/s. If…

A:

Q: While rearranging a dorm room, a student does 323 J of work in moving a desk 2.6 m. What was the…

A: Ans:-  Work:- The work done by a constant force acting on an object is equal to the displacement…

Q: A 450 kg dragster accelerates from rest to a final speed of 120 m/s in 400 m (about a quarter of a…

A: mass of dragster = 450 kg Initial velocity = 0 m/s final velocity = 120 m/s distance moved = 400 m…

Q: A projectile is fired with an initial velocity Vi= 40m/s at an angle 300 to the horizontal. What is…

A: Given data The initial velocity of the projectile is given as vi = 40 m/s. The angle of projection…

Q: At an amusement park, a swimmer uses a water slide to enter the main pool. If the swimmer starts at…

A: The law of energy conservation,

Q: What minimum speed does a 100 g puck need to make it to the top of a frictionless ramp that is 3.0 m…

A:

Q: A 185 kg refrigerator is placed inside a mobile freight transport by pushing it up on a 10.0 m ramp…

A:

Q: A skier of mass 61 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: Given:Mass = 61 kgDistance to be covered = 55 mAngle = 30oSpeed = 2.1 m/s

Q: It takes a force of 1450 N to keep a 1300-kg car moving with constant speed up a slope of5.25°. If…

A:

Q: A weight lifter lifts a 380 N set of weights from ground level to a position over his head, a…

A: Given data: The amount of weight lifted is L=380 N. The height of weight lift is h=2.10 m.   The…

Q: A 3.00N rock is thrown vertically. At 14.3m v=24.9 m/s. What is the initial velocity in terms of the…

A:

Q: A 5.0 N projectile leaves the ground with a kinetic energy of 220 J. At the highest point in its…

A: The difference between the kinetic energies is,

Q: A particle was subjected to a force F, that varies with position as described by 375 F = x³+3.75x…

A: Rewrite the force using partial fraction

Q: The force F3,  13.88 N, acts on the block at an angle of 155.98 degrees.  If the block moves to the…

A: Here, the work done by F3 can be given as The minus sign indicates that the work done by F3 and the…

Q: A rock falls from a vertical cliff that is 4.0 m tall and experiences no significant air resistance…

A: It is given that,

Q: A man pushes a 270-N block 9.1 m along a level floor at a constant speed with a force-directed 45•…

A:

Q: A 8kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 230N.…

A:

Q: A skier of mass 77 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: Distance for which he was pulled,d= 55m Angle of slope with horizontal= 30°

Q: A skier of mass 70.0 kg is pulled up a slope by a motor drivencable. (a) How much work is required…

A: (a) The vertical distance travelled by the skier is

Q: A shopper pushes a grocery cart 36.6 m on level ground, against a 13.1 N frictional force. The cart…

A:

Q: How much work must you do to push a 11.0 kg block of steel across a steel table (μk=0.6)at a steady…

A: a) The required work done is,

Q: A 1631-kg car coasts in neutral down a 2.00 degree hill. The car attains a terminal speed of 20.0…

A:

Q: As part of a charity fund-raising drive, a Chicago marathon runner of mass 50.0 kg runs up the…

A: Given data:  Mass of runner (m) = 50.0 kg Height of building (h) = 443 m Time (t) = 15.0 minutes…

Q: An archer pulls a bow string back 0.40 m by exerting a force that increases linearly from zero to…

A: Work done is defined as product of force and displacement. Mathematically, W=F.S F is force, S  is…

Q: The loaded cab of an elevator has a mass of 2.40 × 103 kg and moves 181. m up the shaft in 28.0 s at…

A: Given: The mass of the loaded elevator is 2.4x103 kg. The time interval is 28 s. The displacement in…

Q: Find the work done in joules by gravity as an object of the mass m=7 kg is raised up at constant…

A: The mass of the object is 7 kg.  The initial height is 40 m.  The final height is 67 m.  The work…

Q: A 10,000 W motor operates an elevator weighing 5,000 N. Assuming no frictional losses, how high is…

A: Expression for power P=EPt=mght=Whth=PtW

Q: A bag of wheat weight 430 kg. To what height should it be raised so that potential energy is 9150 J…

A:

Q: At an amusement park , a swimmer uses a water slide to enter the main pool. If the swimmer starts at…

A: initial speed = 0 m/s vertical height = 2.81 m Surface = frictionless