(science ) if the sun is far away then why does it look like we get higher than it when we lift a camera high in the sky?

What is the length x of the side of the triangle below? (hint: use the cosine function)

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j