(a)[1]
Join each box on the left to the description that correctly names its force.
(b(i))[1]
The table gives the magnitudes of the forces acting on the car at one instant. The gravitational field strength $g$ is $10\,\text{N kg}^{-1}$. Calculate the mass of the car.
(b(ii))[1]
Calculate the resultant force on the car.
(b(iii))[2]
Calculate the acceleration of the car.
(c)[2]
At a different time, the car is moving at speed $u$. It then accelerates for $5.0\,\text{s}$ at $1.6\,\text{m s}^{-2}$, and its speed becomes $20\,\text{m s}^{-1}$. Calculate the value of $u$.