Answer:
Diffraction: Wave Theory
Interference: Wave Theory
Reflection: both particles and wave theories
Refraction: both particles and wave theories
Apply Newton's second law to the car's motion:
F = ma
F = net force, m = mass, a = acceleration
Given values:
F = 2500N, a = 3.0m/s²
Plug in and solve for m:
2500 = m(3.0)
m = 830kg
It occur when is lightning.
Answer:
v_avg = 2.9 cm/s
Explanation:
The average velocity of the object is the sum of the distance of all its trajectories divided the time:
x_all is the total distance traveled by the object. In this case you have that the object traveled in the first trajectory 165cm-15cm = 150cm, and in the second one, 165cm - 25cm = 140cm
Then, x_all = 150cm + 140cm = 290cm
The average velocity is, for t = 100s
hence, the average velocity of the object in the total trajectory traveled is 2.9 cm/s
Yes they should all be going the same speed.
Hope this helped :)
