Answer:
<u>735 J</u>
Explanation:
<u>Formula</u>
Gravitational Potential Energy (GPE) = mgh
<u>Given</u>
- m = 15 kg
- h = 5 m
- g = 9.8 m/s
<u>Solving</u>
- GPE = 15 x 5 x 9.8
- GPE = 75 x 9.8
- GPE = <u>735 J</u>
You completed 100.000 m in 11.800 second
you aced out the other runner by 0.001 seconds
time taken by other runner to finish = 11.800 + 0.001 = 11.801s
speed of other runner = 100/11.801 m/s
distance covered by him in 11.8 s = 100/11.801 × 11.8 = 99.992 m
you won by = 100 - 99.992 = 0.008 meter
Heya!!!
Answer to your question:
C.
Energy transferred to a machine equals energy transferred from it.
Law of conservation of energy states that total energy of an isolated system remains constant
Energy can neither be created nor be destroyed. Machine follows the same rule.
Hope it helps ^_^
Answer:
25.2 cm
Explanation:
K = 1050 N/m
m = 1.95 kg
h = 1.75 m
By the conservation of energy, the potential energy of the block is converted into the potential energy stored in the spring
m g h = 1/2 x k x y^2
Where, y be the distance by which the spring is compressed.
1.95 x 9.8 x 1.75 = 1/2 x 1050 x y^2
33.44 = 525 x y^2
y = 0.252 m
y = 25.2 cm
