Acat with a mass of 4.50 kilograms sits on a ledge 0.800 meters above the ground. what is the potential energy of the cat? 346 j 35.3 j 3.60 j 0.350 j

The correct answer to the question is A) 35.3 J i.e the kinetic energy of the cat is 35.3 J.

CALCULATION:

As per the question, the mass of the cat m = 4.50 kg.

The cat sits on a ledge which is 0.800 m above the ground.

Hence, the height of the cat from the surface of earth h = 0.800 m.

We are asked to determine the kinetic energy of the cat when it just reaches the ground.

The potential energy of the cat at a height h is calculated as -

                      Potential energy P.E = mgh

                                                          = 4.50 × 9.8 × 0.800 J.

                                                          = 35.28 J

                                                          = 35.3 J

Here, g is called acceleration due to gravity. Its value is g =

From law of conservation of energy, we know that energy is neither created nor destroyed. The total energy of a system is always constant, and energy changes from one form to another form.

When the cat is at certain height from the ground, it has potential energy. When it starts jumping, its potential energy is converted into kinetic energy. When it just reaches the ground, whole of its potential energy must have converted into kinetic energy.

Hence, the kinetic energy of the cat just before reaching ground = Potential energy of the cat at height 0.800 m above the ground.

Hence, the kinetic energy of the cat just before reaching the ground is 35.3 Joule.

The correct answer to the question is A) 35.3 J i.e the kinetic energy of the cat is 35.3 J.

CALCULATION:

As per the question, the mass of the cat m = 4.50 kg.

The cat sits on a ledge which is 0.800 m above the ground.

Hence, the height of the cat from the surface of earth h = 0.800 m.

We are asked to determine the kinetic energy of the cat when it just reaches the ground.

The potential energy of the cat at a height h is calculated as -

                      Potential energy P.E = mgh

                                                          = 4.50 × 9.8 × 0.800 J.

                                                          = 35.28 J

                                                          = 35.3 J

Here, g is called acceleration due to gravity. Its value is g =

From law of conservation of energy, we know that energy is neither created nor destroyed. The total energy of a system is always constant, and energy changes from one form to another form.

When the cat is at certain height from the ground, it has potential energy. When it starts jumping, its potential energy is converted into kinetic energy. When it just reaches the ground, whole of its potential energy must have converted into kinetic energy.

Hence, the kinetic energy of the cat just before reaching ground = Potential energy of the cat at height 0.800 m above the ground.

Hence, the kinetic energy of the cat just before reaching the ground is 35.3 Joule.

The correct answer to the question is 35.3 J.

CALCULATION:

The mass of the car is given as m = 4.50 kg.

The cat is 0.800 m above the ground.

Hence, height of ledge from ground h = 0.800 m.

We are asked to calculate the potential energy of the body.

The potential energy possessed by the cat at a height h is nothing else than gravitational potential energy.

The gravitational potential energy of a body at a height h is calculated as-

                         Potential energy P.E = mgh.

Here, g is the acceleration due to gravity. Its value is

Hence, the potential energy of the cat is calculated as -

                                         P.E = mgh

                                                =

                                                =  35.28 J

                                                = 35.3 J                         [ANS]

Answer:

Step-by-step explanation:

D.
Heat each cube to the same temperature, place each cube into different containers with 500 grams of water at the same temperature, and measure the temperature of the water.

Answer:

Step-by-step explanation:

Time taken by the tomatoes to each the ground

using h = 1/2 g t^2 

t^2 = 2h/g = 2 x 50/ 9.8 = 10.2

t = 3.2 sec 

horizontal ditance = speed x time = 3 x 3.2 = 9.6 meters

The question specifies the diameter of the screw, therefore the IMA of this screw is 0.812? / 0.318 = 8.02