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As a ball goes up, the force of gravity is acting on it. The force of gravity means that acceleration in the upward direction is negative (and thus positive in the downward direction). The upward velocity of the ball decreases until it reaches zero - then ball begins to descend with increasing downward velocity.
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Do all balls at the same speed?
yes they have the same speed
What lanes give a driver time and space to reduce their speed?
Deceleration lanes give a driver time and space to reduce their speed.
Explain why friction increases as speed increases using the big idea of particles?
The faster you go, the more air you have bashing into your surface. Imagine the molecules comprising air were the size of basket-balls. at walking speed, you'd only have 5 or 6 basket balls hitting you in the face every minute or so and they'd only hit you at walking pace. When you move up to running speed, you suddenly have 15 or so basket balls hitting you in the face every minute at running pace. Riding on a bicycle, you have between 30 and 40 basket balls hitting you in the face every minute at a very high speed. So the faster you go, the more basket balls you have hitting you at a higher speed. These two factors multiply together to give the friction force which increases as a square factor of your speed, (i.e. increase speed by 2, you have 2x the basketballs hitting you 2x as fast which equals 2x2 = 4 times the friction force). I hope this explanation is adequate. Cheers. by Umar siab:)
When you intend to reduce speed or stop what should you do?
Release accelerator.
What happens to the speed of an object when it is thrown up in the air and when it comes back down?
an object thrown into the air will slow down as it ascends higher into the air until it stops ascending and the speed of the object increases as it falls until it reaches its terminal velocity in air. As an object passes through air, it encounters air resistance which slows down an object moving freely through air. An object will be moving at a slower speed when it hits the ground than it did when it was thrown into the air due to this air resistance.
How do you increase the speed of a motorcycle?
You can change the chain sprockets of most motorcycles to get a higher top speed. Reduce the rear sprocket numerically, and/or increase the front sprocket numerically. A higher profile tire will also increase top speed slightly.
How can an aircraft reduce the speed in the air?
during flight aircraft reduce speed by spoiler
Do all balls at the same speed?
yes they have the same speed
What is the best ball for distance?
This all depends on your swing speed my friend. Harder balls go farther for a person with higher swing speeds and softer balls go further for those individuals with lower swing speeds.
What happens when the mass of either the balls is increased in simulation?
the balls decrease in speed
What should you do when operation a boat in large waves and high wind?
head into the waves at a slight angle and reduce speed
What will happened to the ke if its velocity is reduced by 12 times?
Kinetic energy is proportional to the square of the speed. If you reduce the speed by a factor of 12, the kinetic energy will reduce by a factor of 12 x 12 = 144.Kinetic energy is proportional to the square of the speed. If you reduce the speed by a factor of 12, the kinetic energy will reduce by a factor of 12 x 12 = 144.Kinetic energy is proportional to the square of the speed. If you reduce the speed by a factor of 12, the kinetic energy will reduce by a factor of 12 x 12 = 144.Kinetic energy is proportional to the square of the speed. If you reduce the speed by a factor of 12, the kinetic energy will reduce by a factor of 12 x 12 = 144.
What is engine braking on a Lexus hybrid?
Engine Brake: One way to reduce speed by shift down the gear from Higher to Lower (Eg. Driving with 120 km/h with 5th gear, by turning to Engine Brake it reduce to 4th gear that make the speed is reduced) It's very helpful when driving with high speed.
What does reduce engine speed mean in a 2002 Chevy Tahoe?
It means some one has programmed a speed limit in the vehicle. If the vehicle exceeds the preset speed it will warn you to reduce speed.
Do you have to adhere to reduce your speed limit signs when there is no work crew present?
If the reduce speed signs are posted, yes.
Why worm is geared with worm gear Give reasons?
A worm or machine can be geared with worm gear to give it higher torque or to reduce rotational speed in the machine.
Motorway speed limits are reduced in France when weather is bad to reduce accidents though normally their speed limits are higher than in Britain. What are the advantages and disadvantages of this?
The advantage is that people get where they are going faster. The disadvantage is that crashes are more likely, and therer will be a higher risk of serious injury or death.
