The velocity of train increases uniformly from $30 \mathrm{~km} / \mathrm{h}$ to $90 \mathrm{~km} /

Question

The velocity of train increases uniformly from $30 \mathrm{~km} / \mathrm{h}$ to $90 \mathrm{~km} / \mathrm{h}$ in 4 hours. The distance travelled by the train during this period is\

Professor PC Thomas Classes · Answer

$\frac{v_i+v_f} {2}	imes time$ will give you the answer. You can derive it using the kinematic equations.