Directions: consider a 2-kg bowling ball sits on top of a building that is 40 meters tall. it falls to the grou
about the amounts of potential and kinetic energy the bowling ball has:
as it sits on top of a building that is 40 meters tall.
as it is half way through a fall off a building that is 40 meters tall and travelling 19.8 meters pers
as it is just about to hit the ground from a fall off a building that is 40 meters tall and travelling 28
per second
questions above

1) Kinetic energy

2) 784 J

3) 392 J

4) 392.04 J

Explanation:

1) Potential energy is energy stored in an object due to its position/ height. Kinetic energy is the energy of an object due to motion.

When the bowling hits the ground, it is almost on zero height. Less height makes its potential energy almost zero. While bowling is in a moving phase, it has covered a 40 meters distance to reach on the ground so it posses more kinetic energy.

2) To measure the potential energy, there is a formula,

P.E = mass x gravity x height

= m x g x h

In given data we have,

mass = 2 kg

height = 40 m

gravity = 9.8 m/s2

put the values in the formula

P.E = 2 x 9.8 x 40

P.E = 784J

3) when bowling on its halfway to fall, it covers its half distance. The bowling is on its 20 m height. At that moment its potential energy will be

P.E = m x g x h

P.E = 2 x 9.8 x 20

P.E = 392 J

4) On the bowling halfway to fall, it is traveling 19.8 meters per second, its kinetic energy will be

kinetic energy = 1/2 x mass x velocity²

K.E = 1/2 x 2 x (19.8)²

K.E = 392.04 J

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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