0
A 0.4-kg toy train car moving forward at 3 ms collides with and sticks to a 0.8 and ndashkg toy car that is traveling in the opposite direction at and ndash2 ms. What is the size and direction of the?
Wiki User
∙ 7y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is the size and direction of the final velocity of the tow cars if a 0.4 kg toy train car moving forward t 3 ms collides with and sticks to 0.8 kg toy car that is traveling in the opposite way?
0.4 kg(3 m/s) + 0.8kg(-2 m/s) = 1.2 kg m/s -1.6 kg m/s = -0.4 kg m/s -0.4 kg m/s = 1.2 kg(v) = (-0.4 kg m/s)/(1.2 kg) = v = -0.33 m/s the cars are traveling at 0.33 m/s in the direction of the second car.
How does nwtons third law explain how a rocket takes off?
Newton's third law is that every action has a reaction that is equal in magnitude but opposite in direction. So, for a rocket, the rocket releases force in the backward direction (in the opposite direction it is moving) which enables it to go forward. You can try this at home using a balloon and a string.
In an aero plane drag acts in the opposite direction to thrust?
Yes that is right. In any static equilibrium (not accelerating in any direction) all of the forces cancel out. A plane that is traveling at a constant velocity and altitude is not accelerating although it may be moving. So the thrust is pushing the plane forward and up, the drags pushes back, and gravity pulls the plane down. All of these forces cancel out so the plane stays up in the air and keeps moving forward.
If you are traveling at the speed of a bullet and then fired a bullet in the opposite direction what happens?
1). Your speed in the forward direction should increase somewhat, since the recoil of the shot adds to your momentum. 2). The bullet you fire in the reverse direction leaves the muzzle with full muzzle velocity and momentum in the reverse direction ... in your frame of reference. Viewed by an observer in the stationary frame of reference ... the one in which you are moving at the speed of a bullet ... the one you fire just dribbles out of the muzzle and falls straight to the ground.
What causes a force to produce motion?
To move an object forward from rest the thrust of forward force must be greater than the drag acting in the opposite direction. In order to keep moving at a constant velocity the forward force must equal the drag.
What is fore bearing in civil engineering?
In survey when take level of spot in forward direction is forward bearing opposite to back bearing which if back direction
Which way do twin screw props on a boat rotate when propelling the boat forward?
In opposite direction, but they are designed to propel the boat forward even if they rotate in opposite directions.
What is the size and direction of the final velocity of the tow cars if a 0.4 kg toy train car moving forward t 3 ms collides with and sticks to 0.8 kg toy car that is traveling in the opposite way?
0.4 kg(3 m/s) + 0.8kg(-2 m/s) = 1.2 kg m/s -1.6 kg m/s = -0.4 kg m/s -0.4 kg m/s = 1.2 kg(v) = (-0.4 kg m/s)/(1.2 kg) = v = -0.33 m/s the cars are traveling at 0.33 m/s in the direction of the second car.
What is the forward thrust for an airplane?
A fixed wing aircraft generates forward thrust when air is pushed in the direction opposite to flight. It is proportional to the mass of the airstream.
What is the song that has two dancers cheek to cheek walking low forward and then alternating and going the opposite direction?
tango
What would happen to the hand glider if the air was flowing in the opposite direction?
Gliders rely on the air traveling over the wing span to be at a certain speed. To achieve this the Glider must travel forward. If the air, in the form of wind, is traveling in the same direction, the Glider must travel at the speed of the wind plus the normal speed of operation in order to avoid stalling. If the Glider was traveling at the speed of the wind or slower, it would fall out of the sky towards the ground. During this time the Glider would increase in speed potentially regaining control. If the air, in the form of wind, is traveling in the opposite direction, the Gliders stall point will be lower because the air flowing over the wing span will reach a certain speed much sooner.
How does nwtons third law explain how a rocket takes off?
Newton's third law is that every action has a reaction that is equal in magnitude but opposite in direction. So, for a rocket, the rocket releases force in the backward direction (in the opposite direction it is moving) which enables it to go forward. You can try this at home using a balloon and a string.
In an aero plane drag acts in the opposite direction to thrust?
Yes that is right. In any static equilibrium (not accelerating in any direction) all of the forces cancel out. A plane that is traveling at a constant velocity and altitude is not accelerating although it may be moving. So the thrust is pushing the plane forward and up, the drags pushes back, and gravity pulls the plane down. All of these forces cancel out so the plane stays up in the air and keeps moving forward.
What is the antonym or opposite word meaning advance starting with the letter r?
The antonym for forward is backward, but the opposite direction can be reverse or rearward.
Why the light change as the earth move?
You may be referring to the Doppler effect. I suggest to look up "Doppler Effect" in the Wikipedia; but briefly, waves get "compressed" in the forward direction, and "elongated" in the opposite direction.
What direction will the shuttle come from when it appears in the sky?
forwards It is always traveling around the Earth in the same direction as we are rotating, but much faster. The space shuttle when in space can point in any direction, as there in no up and down. It still keeps moving in the same direction, even with engines facing forward.
A rocket is pushed forward as a reaction to?
The rocket is pushed forwards by the reaction to the force ejecting gas in the opposite direction to the direction of travel of the rocket. Rocket flight is an example of Newton's 3rd law of motion, which states that every action (force) has an equal and opposite reaction. In this case, the action is the ejection of rocket gas and the reaction is the forward force on the rocket.
