I don’t know all of the questions, but I will answer as much as I can.
“What are the four types of friction?”
Answer: Static, sliding, rolling, and fluid friction:
“What is the difference between speed and velocity?”
Answer: Speed is the amount of time at which an object is moving. Velocity, on the other hand, is the rate and direction of that object’s movement.
Hope it helps ya a bit. ^^”
