An object of mass 5kg is taken from a height of 10 m to a height of 30 m. What is the increment in its potential energy? (Assume g = 10m/s2) a) 500 J b) 1000 J c) 1500 J d) 2000 J

Q: A chain of length 4 m is kept on a table. 2 m of the chain hangs freely from the table’s edge. The…

A: Given: length = 4 m table = 2 m mass of the whole chain = 8 kg

Q: How much work is done by the force of gravity in moving a 10 kg block from an initial height of 2 m…

A: Given:   Mass of block, m = 10 kg initial height, h1 = 2 m final height, h2 = 10 m   Value Used:…

Q: How much energy is needed to change the speed of a 1200 kg of a car from 15.0 m/s to 30.0 m/s?

A: Work energy theorem We know from the conservation of energy law that energy can neither be created…

Q: A cheetah can accelerate from rest to 6.4 m/s (about 11 m/h) in 1.0 seconds. How much average power…

A:

Q: A force of 20 N moves an object in the drection of the force. The work done when the object moves…

A: Given Data : The force applied to the object is given as F = 20 N. The object's initial position is…

Q: You throw a book with a mass of 2 kg straight up from the ground at an initial velocity of 9 m/s. a)…

A:

Q: A spring of spring constant 5×103N/m is stretched initially by 5cm from the unstretched position.…

A: Given :               Spring constant k = 5×103 N/m               xi = 5cm = 0.05 m               xf…

Q: A cheetah can accelerate from rest to 6.4 m/s (about 16 m/h) in 1.2 seconds. How much average power…

A:

Q: A 500 kg roller coaster car traveling on a frictionless surface reaches the top of a 10m hill while…

A: The roller coaster is moving at a speed of 8 m/s at the hill which is 10 m high. So at this point,…

Q: An object weighing 20 kg is raised through a height of 2 m. What will be the work done by the force…

A: mass = 2 kg height = 2m if the value of g = 10 m/s2

Q: An athlete in the Olympic game covers a distance of 100m in 10s. His kinetic energy can be estimated…

A: Option d correct

Q: How much energy does a 7kg box have if it is at a height of 5m? O 233 J O 123 J O 343 J O 453 J

A: Given Data: The mass of box is m = 7 kg. The height of box is h = 5 m. When a body is placed above…

Q: A 60-kg climber starts from a site at an elevation of 1,270 m above sea level and climbs to the top…

A:

Q: The mass gains speed.

A:

Q: About 50,000 years ago, a meteor crashed into the earth near present-day Flagstaff, Arizona.…

A: Consider the mass of meteor is about 1.4×108 kg which hits at a speed of 12×103 m/s.

Q: A car is moving at 10 m/s. a) How fast would the car need to go to double its kinetic energy? b)…

A: Part (a) Given: The initial velocity of car is vi=10 m/s. The formula to calculate the initial…

Q: A 5 kg object plunged from a height of 19 feet and hits a spring that has a height of 0.6 meters. A)…

A: Given: Height = 19 feet = 5.8 meters Mass of the object = 5kg Height of the spring  = 0.6 meters A)…

Q: In the figure shown, if the mass (m-6 Kg) is moving with constant speed and traveled a distance…

A:

Q: An object travels at a speed of 4.0 m/s. It has 24 J of kinetic energy. What is the kinetic energy…

A: Kinetic energy is stated as energy passed by moving body. Its value is equal to half the value of…

Q: A 5 kg object plunged from a height of 19 feet and hits a spring that has a height of 0.6 meters. A)…

A:

Q: A cheetah can accelerate from rest to 7.4 m/s (about 18 m/h) in 1.8 seconds. How much average power…

A: initially at rest, u=0 msfinal velocity, v=7.4 mstime, t=1.8 smass, m=51 kg

Q: rope applies a horizontal force of 500 N to pull a crate a distance of 2 m across the floor. A…

A: