1.Work out (show all necessary steps) For what value oft vector 2i + j + k is perpendicular to i - 4 + tk.
If A = i +3k , and B = 2+ 3k then what is the value of AxB?

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

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.

Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d