A Level Maths Mechanics Year 2 Chapter 8: Mini test

Which formula cannot 'translate' to vectors

• s = ut + ½at²
• v = u + at
• s = ½(u+v)t

• v² = u² +2as

What's the new formula?

• r₀ = r + vt
• r = r₀ + at
• r = r₀ + vt
• r₀ = r + at

Particles will collide if ...

• they have travelled the same distance in the same time
• they have the same velocity at the same time
• it is meant to be
• they have the same displacement from an origin at the same time

What's NOT necessarily true at maximum speed

• v = 0
• da/dt = 0
• a = 0
• dv/dt = 0

v = 2^t

• a = 2^tln2
• x = 2^tlnt
• a = 2^tlnt+C
• x = 2^tln2+C