(i)[4]
Determine the acceleration of the train when its speed is $37.5\text{ m s}^{-1}$.
(ii)[2]
Determine the steady speed at which the train can travel.
Mathematics 9709 · AS & A Level · Newton's laws of motion
Newton's laws of motion — practice question
A train with mass $400\,000\text{ kg}$ is travelling along a straight horizontal track. The engine provides a constant power of $1500\text{ kW}$, and the force resisting the train’s motion is $30\,000\text{ N}$.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Driving force obtained as $\dfrac{1\,500\,000}{37.5} = 40\,000$.” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI