Answer:

Explanation:
given,
street light height = 13 ft
man height = 6.3 ft
speed of the man = 3.5 ft/sec



hL = H(L-x)
hL = HL-Hx


L = 1.94 x



Answer:
A car traveling on a highway takes to stop without skidding. What happens to its kinetic energy? ... The energy goes to parts of the brakes. No, the energy can only be reused if there is a heat pump present
C is the correct answer, hope it helps
Answer:
1.1655 N
Explanation:
Given that,
Initial speed, u = 25 m/s
Final speed, v = 26 m/s
Time taken, t = 54 s
So, Applying equation of motion as:

According to the Newton's second law of motion:-

Mass = 63 kg
So,

<u>Force = 1.1655 N</u>
Answer:
D. The sum total of all matter and energy
Explanation:
The universe is defined as a closed system that contains all forms of energy and matter. Therefore, includes the so-called dark matter and dark energy, which make up most of the universe, since ordinary matter would only represent just over 5% of the total.