(a(i))[2]
State the meaning of velocity.
(a(ii))[1]
State how a positive velocity differs from a negative velocity.
(a(iii).1)[3]
From Fig. 11.2, find the man's acceleration during the first $1.4\,\text{s}$.
(a(iii).2)[1]
Comment on the acceleration value you obtained.
(a(iv).1)[1]
State the time $t$ at which the man reaches position D.
(a(iv).2)[3]
Explain, using the forces acting, why the man accelerates upwards at D.
(b(i))[2]
Finish Fig. 11.3 by showing the kinetic energy of the man at C and the elastic potential energy stored in the cord at D.
(b(ii))[2]
The man has a mass of $50\,\text{kg}$. The gravitational field strength $g$ is $10\,\text{N}\,\text{kg}^{-1}$. Using values from Fig. 11.3, calculate the vertical distance between A and C.