1) Refraction
2)Reflection
3)Concave
4)Convex
I took the test and got this right so you can believe me :)
Hope this helps
Acceleration occurs when velocities change.velocity changes either because the speed changes or the direction change.
Answer:no it is staying the same speed
Explanation:
"<span>All waves have frequency, wavelength, speed and amplitude." </span>
Speed = (distance covered) / (time to cover the distance)
= ( 8.45 km) / (0.65 hr)
= (8.45 / 0.65) km/hr
= 13 km/hr