Answer:
Average speed = (total distance) / (total time)
Total distance = 100 km + 200 km = 300 km
Total time = 2 hrs (first part) + 1/2 hr (stop) + 4 hrs (second part) = 6.5 hrs
Average speed = 300 / 6.5 = 46.154 km/hr (rounded)
Explanation:
<span>If you measured all the energy related to motion and all the stored energy in the particles of a substance, you would be measuring thermal energy. The correct option among all the options that are given in the question is the last option or option "C". I hope that the answer has come to your great help.</span>
Answer:
v = 0.489 m/s
Explanation:
It is given that,
Mass of a box, m = 1.5 kg
The compression in the spring, x = 6.5 cm = 0.065 m
Let the spring constant of the spring is 85 N/m
We need to find the velocity of the box (v) when it hit the spring. It is based on the conservation of energy. The kinetic energy of spring before collision is equal to the spring energy after compression i.e.
So, the speed of the box is 0.489 m/s.
366J. Energy is conserved and is transformed from completely potential energy at the top to completely kinetic at the bottom.
Answer:
a
because the mechanical wave is when it goes over and over again
