BRainliest if correct

Physics

2 answers:

RSB [31]3 years ago

5 0

Answer:

True

the reason why I chose tire is because when you put a straw in a cup of water the water refract or bend

padilas [110]3 years ago

5 0

True because the light waves do bend when they pass from one medium to a different medium because the speed of the wave change

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How can we determine the strength of a sonic boom?

tino4ka555 [31]

There are several factors that can influence sonic booms - weight, size, and shape of the aircraft or vehicle, plus its altitude, attitude and flight path, and weather or atmospheric conditions.

8 0

4 years ago

A rock is thrown vertically upward from some height above the ground. It rises to some maximum height and falls back to the grou

True [87]

Answer:

At the highest point the velocity is zero, the acceleration is directed downward.

Explanation:

This is a free-fall problem, in the case of something being thrown or dropped, the acceleration is equal to -gravity, so -9.80m/s^2. So, the acceleration is never 0 here.

I attached an image from my lecture today, I find it to be helpful. You can see that because of gravity the acceleration is pulled downwards.

At the highest point the velocity is 0, but it's changing direction and that's why there's still an acceleration there.