Question

Fill in the blanks and answer this 3 questions correctly (Show your work) and earn 10pts and the brainlist answer!

Answer 1

The FASTER an object moves, the MORE KINETIC ENERGY it has.
The greater the MASS of a moving object, the MORE KINETIC ENERGY it has.

15. Kinetic energy.  KE= 0.5 * 2.1 * 30^2= 945
16. Potential energy. PE= 1.5 * 10 * 21= 315
17. Kinetic energy. KE= 0.5 * 1120 * 40^2= 896,000

Answer 2

Answer:

15.KINETIC ENERGY,1890J

16.potential energy,315J

17.kinetic energy 1792KJ

Explanation:

kinetic energy is the energy of a body possesses when in motion or in movement.

Potential energy is the energy a body possesses due to its position. it is also called the energy of position

15. the volleyball has been served and is therefore in motion. it has kinetic energy

K.E=m.v²

m=2.1kg

v=30m/s

K.E=2.1 × 30²

=2.1×900=1890J

16. The carriage is sitting at a position on the hills. It has potential energy

P.E=mgh

m=1.5kg

g=10m/s²

h=21m

P.E=1.5×10×21

=315J

17. The car is trravelling. it is in motion. it has Kinetic energy

K.E=mv²

m=1120kg

v=40

K.E=1120×40²

1120×1600=1792000J

=1792KJ