(a(i))[1]
State an equation for the kinetic energy of an object with mass $m$ moving at speed $v$.
(a(ii))[1]
State and explain whether kinetic energy should be treated as a scalar quantity or as a vector quantity.
(b(i))[2]
For the car with passengers, determine its momentum when it is travelling at 2.5 m/s.
(b(ii))[3]
For the car with passengers, determine the speed and direction of motion immediately after the collision.
(b(iii))[2]
Describe the energy transfers that take place while the cars collide and then move apart.