- In physics Speed refers to how fast an object is moving, Velocity refers to the rate in which an object changes its position and how quickly the object does that. How acceleration works is when something is hit or fired the object speeds up over a distance moving. The two main formulas used to find speed or velocity are v= displacement /time or s=distance/time. how a projectile would look is that is would look like a Rambo it would hit its highest height them come back down.
- As a hockey player gains speed by skating faster, the velocity of his leg that he is pushing on, reduces the amount force or push force that he can exert on the ice. By the player moving his skate blade, the velocity decreases. If there was an hockey player that was small and a hockey player that was big the bigger skater would be able to skate faster because he would have more power to skate at a faster speed. anther example would be if a hockey puck was hit the hockey puck would accelerate across the ice.
- review questions
- when a hockey puck is hit it________ across the ice. accelerates
- a hockey player skates across the ice rink in 10 seconds the ice rink is 20m long what is his velocity? 2m/s