An NBA basketball (mass 0.625 kg) is dropped from (its bottom) 1.80 m above the floor, and after the bounce, rises to be 1.40 m above the floor. What is the energy efficiency for the basketball's bounce?

Q: Starting from rest, a ball of mass 6 kg experiences a constant force of 24 N. What is the final…

A: W=KEfinal-KEinitialFd=KEfinal-KEinitial

Q: A 1.0kg rock is dropped from a height of 6.0m. At what height is the rock’s kinetic energy twice its…

A: The velocity of the rock is, Thus, the kinetic energy is,

Q: A simple pendulum 1 metre long has a bob of 10 kg. If the pendulum swings from a horizontal…

A: Answer:-  Given  Mass of the Bob(m) = 10 kg  Height (h) = 1 m  Acceleration due to gravity (g) = 9.8…

Q: A 90 kg object begins falling from a height of 250 m. How much potential energy will the object have…

A:

Q: A 50 g toy spring with a spring constant of 150 N/m is compressed 3.0 cm. How much energy is stored…

A: mass of toy = 50 g spring constant = 150 N/m compression = 3 cm

Q: A 3 kg ball falls from a height of 10 m. During the bounce it loses 50 J of energy. How high will it…

A: Given data: Mass (m) = 3 kg Initial height = 10 m Loss in energy = 50 J Required: Height of bounce…

Q: A spring of constant k = 19.6 N/m is compressed from its equilibrium position by 28.1 cm. How much…

A:

Q: A 8 kg pendulum is swinging back-and-forth. When the pendulum is at some point between its maximum…

A: Explanation Total energy of the pendulum can be obtained by the sum of potential energy and kinetic…

Q: Tim, with mass 68.8 kg, climbs a gymnasium rope a distance of 3.5 m. The acceleration of gravity is…

A:

Q: A box is moved from the floor up to a tabletop but gains no speed in the process. Is there work done…

A:

Q: a stretch spring of constant 200N/m has an elastic potential energy of 4j . the extension of the…

A:

Q: A spring with k = 895 N/m is compressed 5.00 cm. A 0.500 kg mass sits on top. The spring is…

A: Given, Sping constant = 895 N/m compress distance = 5.00 cm  mass of block = 0.500 kg

Q: A ball of 7 kg has velocity given by ü = ( 6 î - 5 ĵ + 2 k ) m/s What is the kinetic energy? Answer…

A: Mass of the ball is m = 7 kg velocity of the ball is v = 6i - 5j +2k

Q: An object of 10 kg mass moves with a velocity 80 km/hour at the height 100 m. What is the total…

A: It is given that

Q: - As the ball fall from a building the energy is converted into a) Sound energy, mechanical energy…

A:

Q: Approximately 14 m in length, twin jets operate with maximum power 144 kW. How much energy does a…

A: Power is rate of work done it means energy used per unit time Energy = Power × time

Q: A 0.4 kg mass attached to a spring is pulled back horizontally across a table so that the potential…

A:

Q: A 2 kg watermelon is put into a giant sling shot and stretched 1 meter by a system of gears.  The…

A: In order to stretch the slingshot force is applied on it. The work done by the force is stored in…

Q: During a crash test, a 900kg car moving at 25 m/s hits an uncompressed horizontal spring with a…

A:

Q: An object is dropped from a height of 15 m. (a) At what height will its kinetic energy and potential…

A: given: height,h = 15 m

Q: A ball at the end of a string is swinging as a simple pendulum. Assuming no loss in energy due to…

A:

Q: A 2-kg box, moving along a horizontal frictionless surface, hits a spring (k = 5200 N/m) on the…

A: Given data:  Mass (m) = 2 kg Spring constant (k) = 5200 N/m Initial Speed (v) = 10 m/s Final speed =…

Q: A hammer weighing 200.0 g is raised 3.0 m above the ground. What is its potential energy? 200 grams…

A: Given Data: The weight of the hammer is: w=200.0 g=0.2 km The height raised by the hammer is: h=3.0…

Q: A 0.85kg mass vibrates according to the equation x= 0.75cos(7.2)t where x is in meters and t is in…

A: The given equation is x=0.75 cos7.2t                ...... (I) The given equation is of the form,…

Q: What is the energy stored in a rubber band if it has a spring constant of 28 N/m and is stretched…

A: Answer           A) 0.88 J

Q: Starting from rest, a ball of mass 3 kg experiences a constant force of 12 N. What is the final…

A: Using Newton's second law of motion, the acceleration of the ball can be obtained as…

Q: A spring with a spring constant k = 852 N/m is compressed from its unstretched length to a length of…

A: The potential energy of the spring is given by 0.5kx^2            where k= spring constant…

Q: how much energy is stored in the spring when it is stretched? *

A:

Q: A pendulum is pulled back from its equilibrium (center) position and then released. When the…

A:

Q: An object is dropped from a height of 18 m. At what height will its kinetic energy and its potential…

A: It is given that,

Q: 5-kg sled has a potential energy of 6500 J at position A above the ground. When the sled strikes the…

A: Given  potential energy (U)=6500 J mass(m)=5 kg

Q: a mass of 0.1420 kg and has this speed just before a batter makes contact with it, how much kinetic…

A:

Q: It takes a force of 20 Newtons to hold a spring stretched to a distance of  40 cm. What is the…

A: Force applied on spring (F) = 20 N  Elongation in spring (x) = 40 cm = 0.4 m

Q: Anna whose mass is 45.0 kg was placed in a swing and started to enjoy while the swing moves to and…

A: Mass of Anna: m = 45.0 kg Maxiumum distance of Anna from ground: h2 = 2.5 m Miniumum distance of…

Q: a 2kg mass is attached to a spring. If the elongation of spring is 4cm. how much potential energy is…

A: Given data:  Mass (m) = 2 kg Elongation of spring (x) = 4 cm = 0.04 m Required: Potential energy of…

Q: A hydroelectric generator converts kinetic energy of water into electrical energy. Each second 2264…

A: Given: The mass of the water is m =2264 m3 The height of the waterfall is h=191 m’ Acceleration due…

Q: A 0.1 kg disk is shot across a frictionless horizontal surface by compressing it against a spring…

A: We can apply the law of conservation of energy in this situation. Initially the disk has all of its…

Q: A ball of mass 0.80 kg is dragged in the upward direction on an inclined plane. What is the height…

A:

Q: A metallic ball of mass m = 3kg is released from the ground at a height of h = 100m. What is the…

A: Solution: Given that 'm = 3 kg h = 100 m

Q: A spring with a spring constant of 200 N/m stretches by 0.03 m. What is the potential energy of the…

A: Given data:  Spring constant (k) = 200 N/m Stretch in spring (x) = 0.03 m Required: The potential…

Q: A linear spring is compressed by 0.135 m from its equilibrium position. If it stores 6.1 J of energy…

A:

Q: Q3. A 7kg bowling ball moves at 3m/s. How fast must a 2.45g Ping-Pong ball moves so that the two…

A:

Q: What is the total energy of a 10 N object dropped from a height of 10 m after 0.5 seconds? 1J 10 J…

A: Initially, the object is at some height so the total energy of the object become equal to potential…

Q: What is the force generated by the spring when it is compressed 6.00 cm and have spring constant of…

A:

Q: A mass of 10.0 kg is attached to a spring on a frictionless horizontal surface. The spring constant…

A: