Samantha pushes a 50-N crate up a ramp

Q: get the rope in motion as only spiderman knows how, eventually getting it to swing enough that he…

A:

Q: 1. A2 kg ball travels in a horizontal circle connected to a 0.80 m string. The ball travels at a…

A: Given, Mass of ball is 2 Kg length of string l=0.80m  constant speed v=6 m/s

Q: Samantha pushes a 60-N crate up a ramp 30 m in length and inclined at 10° with the horizontal. What…

A: Force on crate, F= mg = 60 N Length of ramp, L = 30 m Inclination, θ = 10° Potential energy, PE = ?

Q: A bag of wheat weight 300 kg .To what height should it be raised so that potential energy is 9600 J?…

A: Given data :        Mass of the bag  =  m         Potential energy   =  P•E         Acceleration due…

Q: Someone lifts 120g of snowballs off the ground, raises them to a height of 100 cm, and then throws…

A: m=120 g = 0.120 kg h=100 cm = 1 m  v=10 m/s g=10 m/s^2   Work done = energy

Q: 7. A motor and cable apparatus lowers an elevator that is initially moving downward until the…

A: Given:An elevator moving downward with an initial velocity of vo from the height y.

Q: A 4-N force is applied to a 2-kg object that is moving at 3 m/s. This force is parallel to the…

A: Work done = Force × displacement

Q: Biological muscle cells can be thought of as nanomotors that use the chemical energy of ATP to…

A:

Q: 4. A 230-kg roller coaster reaches the top of the steepest hill with a speed of 6.40 km/h. It then…

A: To solve this problem we use the concept that total energy of the system remains constant

Q: 2. A rollerskate is dragged across the ground for 3.4 meters, by someone pulling on its shoelace.…

A:

Q: As I carry a box up a flight of stairs, am I doing positive work or negative work on the box?…

A: When you carry a box up a flight of stairs, the force is in the direction of the displacement. Hence…

Q: A mother does 220 J of work while pulling her child back on a frictionless swing, whose chain is 4.7…

A: Correct Answer: The mass of the child is 26.4 kg. Note: Please recheck your given option as all the…

Q: hi

A: Given value--- mass = 10 kg. force = 10 N. distance = 5 m. We have to find--- work done by…

Q: A father pushes his child weighing 100. pounds on a sled on a frictionless surface. How much work…

A: Work done is defined is defined as the product of force and displacement. Again from newton's second…

Q: A 3 kg ball falls from height of 14 m. What willbe potential energy of the ball after 1 second?  Use…

A: given data,  mass of the ball , m = 3 kg initial height , h = 14 m  gravitational acceleration , g =…

Q: 1) A freight plane has a total mass of 4.00 x 105 kg (including cargo). It starts from rest at sea…

A: Given, Mass of freight plane (M) = 4×105kg  Initial speed (u)= 0 m/s  Initial height(hi) = 0 m (…

Q: 1. KitKat has just caught an insect and decides to bring it with pride to his human owner. A…

A: Power is defined as P=F→·v→ Here F→ is force and v→ is velocity. Work done is W=Pt Here P is power…

Q: 7. A Crate with mass 8.0kg is pulled up a 30° incline by a rope angled 18° above the incline. The…

A: Given  Mass = 8 kg  Theta = 30° Rope angle 18° Friction coefficient 0.25 Tension in Rope 120N Using…

Q: 3.Starting from the rest and height of 8 m, a 3 kg object slides down a 30° m incline, reaching the…

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Q: 4. A body moves a distance of 10 m under the action of a force that has a constant value of 5.5 N…

A:

Q: what is the kinetic energy in joules of a 1120-kg automobile traveling at 88 km/h?   2. how much…

A: Given, Mass, m = 1120 kg Speed, v = 88 km/h = 88×518=24.44 m/s

Q: . A 0.10-kg steel ball drops to the floor from a height of 2.0 m and then rebounds to a height of…

A:

Q: Why is it tiring to push hard against a solid wall even if no work is done? A 75 kg firefighter…

A: Q 1) We get tired because we use our energy to contract the muscles. We try to push the wall using…

Q: An elevator is lifted by its cables at a constant speed. Is the total work done on the elevator…

A: If the elevator lifted by cables on the elevator two forces are acting 1) gravitational force…

Q: 5. A 0.50-kg ball is thrown vertically upward with an initial speed of 16.0 m/s. What is the kinetic…

A: Given Mass of ball = m = 0.50 kg initial velocity= u = 16 m/s We have to calculate the kinetic…

Q: A cowboy shoots a pistol in the air when he rides a horse into a small town. The muzzle speed is…

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Q: A box slides down a ramp that makes a 20° angle with the ground To keep the box moving at a constant…

A:

Q: 3. A factory worker pushes a 30.0-kg crate a distance of 4.5 m along a level floor at constant…

A: Given data: The mass of crate is m=30 kg. The distance traveled is d=4.5 m. The applied force is…

Q: A 5 kg ball falls from height of 16 m. What willbe potential energy of the ball after 1 second?  Use…

A:

Q: 1. The shot is 1.2 m above the ground at 10 m/s when a shot-putter fires a 5 kg shot. It reaches 5 m…

A: Initial kinetic energy = (1/2)×mv2  Ki = (1/2)×5×102 = 250 J  Initial potential energy = mgh  Ui =…

Q: 10. A 0.58-kg ball is thrown vertically upward with an initial speed of 13.5 m/s. What is the…

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Q: A rope exerts a force F⃗ on a 20.0-kg crate. The crate starts from rest and accelerates upward at…

A:

Q: 1. A 50 kg sled is pushed by applying a force F = 400 N, as shown, with @= 30°. The surface is rough…

A: Hi, you have submitted multiple subpart questions and it is not specified which parts problem you…

Q: A 2kg package is moves up along a 10 m ramp AC inclined at 15' with an initial speed of 5 m/s.…

A: Given, m=2kgL=10mθ=150v0=5m/sμ=0.2

Q: A bag of wheat weight 320 kg. To what height should it be raised so that potential energy is 8220 J?…

A: Given:  Mass (m) = 320 kg Potential Energy (U) = 8220 J Acceleration due to gravity (g) = 9.8 m/s2…

Q: A horizontal spring is stretched 10 cm and then released from rest. Will the spring ever stretch a…

A: Given that: The spring was stretched 10 cm initially and released from rest.

Q: 4. A 2.0 kg box slides down a ramp a distance of 3.0 meters before it reaches the ground. The ramp…

A: The mass of the object is 2 kg.The angle of the inclination is 35o.The kinetic friction force is 4…

Q: .A 1000 kg car slows down from 25 m/sec to 19.4 m/sec in 6.0 seconds when coasting on level ground…

A: We have to first calculate the acceleration of the car from given data of speeds and time. Then we…

Q: Starting from rest, a 20.kg boy slides down from a slide that drops through a height of 2.2m with…

A:

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!