Are speed and velocity EXACTLY the same when it comes to physics?

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block