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Subconsciously driving over the speed limit after leaving an expressway
Tiara Lebsack
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When stream flow decreases to below the critical settling velocit of a certain size particle occurs?
drugs
Is speed and velocit y the same thing?
Speed is how fast something is going. Velocity is the speed and direction something is going.
How do you make a dart gun?
There are multiple ways to create one, you could do ot jist with a small tube and human air. Or if your more tech or mech savy you could use compressed air or nitrogen and a valve to shoot air into a barrel proppeling the dart at a higher velocit. Than you could do with your mouth.
Andrea walked 1 block north and then 2 blocks west. How would you determine her total displacement?
Draw a vector from her starting point to her ending point
If you fire a gun from the front of a car with the bullet going in the same direction as the car level with the ground will the bullet's speed increase?
If a bullet was fired towards the groung it would be accelerated at a rate of 9.9 meters per second2 due to the force of gravity. The time gravity would have to act and the velocit of the bullet is so great that the extra velocity would be insignificant.
A shopping bag is hanging straight down from your hand as you walk across a horizontal floor at a constant velocity does this force do any work while you are riding up an escalator at constant velocit?
While you are walking across a horizontal floor at a constant velocity, the force your hand exerts on the bag does no work. However, when you ascend an escalator, the force does perform work on the bag. Why? To do work is to change the energy of an object. In this case we have either kinetic energy, or gravitational potential energy. The first case we are walking on a horizontal floor, there is no change in height, thus no change in potential energy. We are also moving at a constant speed, thus no change in kinetic energy. If we sped up, or slowed down, then we would do work. In the second case, we are ascending an escelator, and changing the height. This changes the gravitational potential energy, and thus does work.
