1.2 Kinematics

Question 1

What is the difference between velocity and speed?

Answer 1

Speed is the magnitude of the velocity (distance divided by time taken), whereas velocity also has a directional component (displacement divided by time taken). This makes speed a scalar and velocity a vector

Question 2

What are the 5 xuvat equations?

Answer 2

• x = 1/2(u+v)t
• v^2 = u^2 + 2ax
• x = ut + 1/2at^2
• x = vt - 1/2at^2
• v = u + at