> Difference between #pressure and #velocity
You hold a water hose in your hand. Turn on the faucet and watch the water coming out of the hose. If you place the palm of your hand over the open end of the hose, you can feel the force of the water hitting the palm of your hand.
Pressure = Force ÷ area
You are feeling the force that the water is exerting on a specific area of your skin. As the water collides with your skin, the water’s velocity will decrease to 0 m/s. Your skin exerted a force on the water that caused the water to decelerate.
So, pressure measures the force that the water exerts on hole at the open end of the hose.
I have an attachment on the hose to decrease the area of the open end of the hose. As I decrease the area, the water’s velocity increases.
Velocity measures the distance that the water moves each second. Pressure supplies the force that caused the water to have enough kinetic energy to move that distance each second.
You hold a water hose in your hand. Turn on the faucet and watch the water coming out of the hose. If you place the palm of your hand over the open end of the hose, you can feel the force of the water hitting the palm of your hand.
Pressure = Force ÷ area
You are feeling the force that the water is exerting on a specific area of your skin. As the water collides with your skin, the water’s velocity will decrease to 0 m/s. Your skin exerted a force on the water that caused the water to decelerate.
So, pressure measures the force that the water exerts on hole at the open end of the hose.
I have an attachment on the hose to decrease the area of the open end of the hose. As I decrease the area, the water’s velocity increases.
Velocity measures the distance that the water moves each second. Pressure supplies the force that caused the water to have enough kinetic energy to move that distance each second.
