A 20 kg child sits on a 4.3kg sled and slides down a 144 meter, 33 degree slope, to the nearest 0.1 m/s what is his or her speed at the bottom?

Q: During a drag race Car A does work in moving 500 m in 4 seconds whereas Car B does the same work in…

A: Given two cars A and B does same work. Time of car A  tA = 4 sec Time of car B tB = 5 sec We have to…

Q: Calculate the kinetic energy in Joule, of a car of mass 1500kg travelling at 90km/h.

A:

Q: Calculate the kinetic energy in Joule, of a car of mass 1000kg travelling at 115km/h.

A:

Q: A 70.00 kg jumper leaves the ground with a vertical velocity of 5 m/s. c.) What is his minimum…

A: Given that  Mass of jumper =70kg Initial velocity =5m/s

Q: 4. A 10.0 kg monkey swings on a vine from a point which is 40.0 m above the jungle floor to a point…

A: Given: Initial height of monkey from ground = 40 m Mass of monkey = 10 kg Final height of monkey…

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: The world's fastest humans can reach speeds of about 11 meters per second. In order to increase his…

A: The maximum speed of the sprinter,

Q: Suppose a 3.50 g block is dropped from a height of 7.50 m. What is the speed of the block when it…

A: Given  Mass m=3.50 gram Height h=7.5 m Intitial speed u=0

Q: Calculate the kinetic energy in Joule, of a car of mass 1800kg travelling at 40km/h.

A: Recall KE=1/2mv^2 m=1800kg v=40km/hr=11.11m/s

Q: You toss a 0.10-kg ball straight up at a speed of 2.0m/s. How much work is done by gravity when the…

A:

Q: A 95 kg man runs up a 20 m high stairs at a constant speed. If it takes him 8 seconds to reach the…

A: The rate  of doing work is called power.

Q: A 0.8 kg paint bucket is falling at 6.0 m/s. How many Joules of kinetic energy does the bucket have?

A:

Q: A 220-kg motorcycle is cruising at 14 m>s. What is the total work that must be done on…

A:

Q: Q16. A giri weighing 45 kg jumps to a height of (1/2) m at the rate 10 times per minute. The power…

A: Data provided :  Mass (m) = 45 kg Height (H) = 0.5 m The Rate = 10 times per minute

Q: a 1000 kg sports car accelerates from zero to 25m/s in 7.5 seconds. What is the average power…

A: Mass, m = 1000 kgInitial velocity, u = 0 m/sFinal velocity, v = 25 m/sTime, t = 7.5 s

Q: A single force F(x) = −4.0x (in newtons) acts on a 1.0-kg body. When x = 3.5 m, the speed of the…

A:

Q: A 30kg child starting from rest slides down a water slide with a vertical height of 10.0m. Whatis…

A:

Q: A 5.0 kg mass is falling from a height of 10.0 m with a speed of 2.0 m/a what is it's totally…

A:

Q: A single force F(x) = −8.0x (in newtons) acts on a 3.0-kg body. When x = 6.75 m, the speed of the…

A: Given, Force, Fx = -8xMassm = 3 kg , when x = 6.75 m  , v = 4 m/swhen x=2.5m , v = ?

Q: A chimp climbs on to a wall that is 3.6m high and gains 2 268 J of potential energy. What is the…

A: Bartleby's guidelines allowing answer only the first question

Q: Calculate the kinetic energy in Joule, of a car of mass 1500kg travelling at 105km/h.

A: Mass of car: M = 1500 kg Speed of car: v = 105 km/h = 29.1667 m/s

Q: A 9.0 kg rock is dropped from a height of 9.0 m. At what height is the rock's kinetic energy twice…

A:

Q: A 900kg car is moving at 5 m.s. how much kinetic energy does it have?

A: The kinetic energy of the car can be given by KE=12mv2

Q: A 210g stone is raised to a height of 26m. the gravitational potential energy (in Joule) of the…

A:

Q: You drop a 4 kg object from a 50 m high cliff. When it is 20 m high, air resistance has reduced the…

A:

Q: A 200kg roller coaster starts at a height of 62.5m above the ground with an initial velocity of 3.0…

A:

Q: A 340g stone is raised to a height of 20m. the gravitational potential energy (in Joule) of the…

A:

Q: You push down on a 3.0 N box for 15 minutes. How much work was done?

A: According to the Newton's second law , the force acting on an object is defined as the product of…

Q: Calculate the kinetic energy in Joule, of a car of mass 1300kg travelling at 50km/h.

A:

Q: A 55 kg snowboarder begins his run at the top of a 50.0 m tall hill with a speed of 0.5 m/s. What is…

A: (given) Mass of snowboarder = 55 kg Speed vi at the top of the hill = 0.5 m/s…

Q: 1000 kg car requires eight seconds to change its speed from 0 km/h to 140 km/h. What is the powered…

A: mass of car= 1000 Kg time= 8 sec

Q: a parachutist of mass 50kg jumps out of an airplane at a height of 1000 m. The parachute deploys,…

A: By conservation of energy. Potential energy=KE at ground+enrgy lost to air friction

Q: An outboard motor boat is rated at 35 hp. If it can move a particular boat at a steady speed of 35…

A:

Q: A 6.0kg box is pulled across a frictionless surface for 60m. If the box experiences a change in…

A:

Q: A cyclist does work at the rate of 500 W while riding. How much force does his foot push with when…

A: To determine: The force on the foot while pushing a cylce   Given: Power, P=500 W Velocity, v=8 m/s

Q: A 1000 kgm car travelling at 100 km/hr starts its brakes to slow down. it travels a distance and…

A: Given data: Mass of car, m=1000 kg Initial velocity of car, u=100 km/hr=27.78 m/s (since, 1 m/s =…

Q: The famous cliff divers of Acapulco leap from a perch 35 m above the ocean. How fast are they moving…

A: Details Given: Height of cliff = 35m The velocity of cliff divers is calculated from the formula of…

Q: Calculate the work you must do to accelerate 2 kg from rest to 1 m/s. Answer in Joules.

A: Given: The mass of the object is 2 kg. The initial speed of the object is 0 m/s. The final speed of…

Q: You carry a 7.0 kg bag of groceries 1.2m above the level floor at a constant velocity of 75 cm/s…

A: Here bag makes an angle 900 with normal. So work done W = F.d  W = Fd cos 900

Q: You're riding a toboggan down an icy run to a frozen lake, and you accelerate the 80.0-kg…

A: Given : m=80kg u=1m/s v=2m/s t=2s

Q: A 2.9-kg block with a speed of 4.2 slides down a 7.4-m high, frictionless incline. What is the speed…

A: Draw the free-body diagram of the block.

Q: Calculate the kinetic energy in Joule, of a car of mass 1400kg travelling at 90km/h.

A: Given, mass m=1400 kg velocity v=90 km/h

Q: A 10.0 kg bowling ball falls from a 5.0 m shelf. Just before hitting the floor, what will be its…

A:

Q: A man pushes a 17 kg box from rest to a speed of v, doing 320 J of work in the process. During this…

A: We know thatChange in kinetic energy is called workdoneW=K.Ef -K.EiKinetic energy of object is given…

Q: A 10 kg block slides down a hill that is 200 meters tall with an initial speed of 12 m/s. What is…

A: Given: Mass of block , m =10 kg Height of hill, h = 200 m Initial speed of block at top , u=12 m/s.…

Q: A 1 000-kg sports car accelerates from zero to 25 m/s in 7.0 s. What is the average power delivered…

A: The expression for velocity is,

Q: Justin, with a mass of 55 kgkg, is going down an 8.0-mm-high water slide. He starts at rest, and his…

A:

Q: A 20.0-kg child descends a slide 1.90 m high and reaches the bottom with a speed of 1.35 m/s . a)…

A: As we know, Kinetic energy (KE) = 1/2 mv2  --------(1) where m is the mass of a child and v is…