# Neglecting air resistance, which statement is not true regarding the energy of the ball? a. The kinetic energy decreases while the ball is going up. b. The potential energy decreases while the ball is going up. c. The kinetic energy increases when the ball is coming down. d. The sum of the kinetic energy and potential energy is constant. e. The potential energy decreases when the ball is coming down.

b. The potential energy decreases while the ball is going up.

Explanation:

Given that we have to neglect the air resistance.

As we know that acceleration due to gravity is in downward direction and it is equal to 10 m/s².

a)

If ball is going up then the velocity of the ball will decreases because the acceleration due to gravity is in opposite to the direction of velocity.That is why kinetic energy of the ball will decreases.

b)

As we know that when we are moving up then the our potential energy is also going to increase.That is why when ball is going to up then potential energy of the ball will increases.

c)

The kinetic energy will increase because the velocity of ball increase.

d)

If there is no any external  resistance force then the summation of kinetic and potential energy will be constant.

e)

When ball is coming to down then potential energy will decreases.

Note - Potential energy = m g h

Kinetic energy = 0.5 m v²

Option B is correct.

## Related Questions

A 2130 kg car is parked on a hill that makes a 15º angle with the horizontal. What is the normal force on the car?

20573.67N

Explanation:

Given;

mass (m) of the car = 2130kg

angle of inclination Θ = 15⁰

The normal force (F) on the car is given by

F = mgcosΘ

where g is the acceleration due to gravity.

Taking g as 10 and substituting the values of m and Θ into the equation. We have;

F = 2130 x 10 x cos 15⁰

F = 2130 x 10 x 0.9659

F = 20573.67N

Therefore the normal force on the car is 20573.67N

What physical fitness component is the cornerstone that creates a pathway to improving your other fitness levels?

I believe it's Cardiovascular endurance

What are the Vedas? a) priests

b) religious writings

c) writings of the Buddha

d) Hindu gods

B religious writing

Explanation:

The Vedas are a large body of religious texts originating in ancient India. Composed in Vedic Sanskrit, the texts constitute the oldest layer of Sanskrit literature and the oldest scriptures of Hinduism. Hindus consider the Vedas to be apauruṣeya, which means "not of a man, superhuman" and "impersonal, authorless

The apparent displacement of an object as it is viewed from two different positions is known as A. parallax.
B. a parsec.
C. a light-year.
D. an arcsecond.

This phenomenon is known as parallax. The simplest example is this: if you are sitting in the passenger seat, the gas tank needle may appear to read empty. However, if you are the driver, you will see that you are not on empty, but should get some gas.

Give a precapillary arteriolar pressure of 46 mmHg, a postcapillary venule pressure of 16 mmHg, an intersitial fluid hydrostatic pressure of 1 mmHg, and a plasma oncotic (osmotic) pressure of 25 mmHg, what is the average net pressure of this capillary?

ΔP = 4 mmHg

Explanation:

Pressure is a scalar quantity so it is additive

Capillary pressure from arterial to venous blood transfer is pressure

ΔP = P_arterial - P_venosa - P_interticial - P_osmotica

ΔP = 46 -16 -1 -25

ΔP = 4 mmHg

This is the pressure that carries blood from the arteries to the veins

Which statement is true of stellar evolution?

There are no true statements at all on the list of choices
that you included with the question.

How does wavelength and frequency affect the speed?

Rather, an alteration in wavelength affects the frequency in an inverse manner. A doubling of the wavelength results in a halving of the frequency; yet the wave speed is not changed.

We are usually not aware of the electric force acting between two everyday objects because a.) most everyday objects have as many plus charges as minus charges

b.) the electric force is invisible

c.) the electric force is one of the weakest forces in nature

d.) the electric force is due to microscopic-sized particles such as electrons and protons