18. In an airplane flying at a constant speed, theforce pushing the airplane forward is exerted
by the engine and is equal to the opposite
force of air resistance. Describe how these
forces compare when the plane speeds up
and slows down. In which direction is the
net force on the airplane in each case?

Answers

Answer 1

Answer:

Explanation:

In an airplane flying a constant speed, the force exerted by the engines pushing the plane forward is equal to the opposite force exerted by air resistance.

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a truck with a mass of 1150 kg and a velocity of 13 m/s collided into a parked car with a mass velocity does the car move forward after the collision

Answers

Answer:

Yes

Explanation:

The truck has momentum since it is moving and momentum is a product of mass and velocity. After impact, part of momentum that the truck had is transferred to the car hence the car initially at rest moves a significant diatance. Here, we utilize the formula MV= (m+M)v where M and V represent mass and velocity of the truck while m is the mass of car, v is the common velocity. Note that some letters are capital while others small, don't confuse these.

Which of the following best describes this image?

Answers

Answer:

B and D

High Accuracy

Low precision

Explanation:

Its attached below!

A red apple is illuminated by green light. what color will the apple appear as?

Answers

The apple will be a sort of reddish or greenish brown.

the Apple will be a red/brown almost burgundy color

a girl pulls a wagon by applying a force to it .what other force can you infer acts on the wagon in opposit direction

Answers

Friction I believe, because the friction from the ground would pull against the wagon.

Friction because it pushes the wagon and it comes from the ground

How does air and water affect a nail?

Answers

Well for starters...... Air particles are all around. They try to attach to pretty much everything. ( If you know what I mean ) Next water is hard to make it stick with just water..... So you could say to use a chemical to make it fully stick to the actual nail itself. I hoped that this helped.

I think that it is the oxygen in the air and in the water that affects the nail because most nails are made of iron and oxygen+Iron= Oxidation which is rust.

If a basketball travles a distance of 4 meters in 5 seconds whst is the average speed