Bike computers tell the ride what altitude they are at and how the altitude is changing using a basic barometer

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?