A remotely operated research vehicle of mass 1000 kg is tested on a straight, level track. The horizontal forces during three stages of the test are shown in the table.

Stage	Situation	Driving force forwards in $N\text{N}$	Resistive force backwards in $N\text{N}$
1	the vehicle starts from rest	2000	500
2	the vehicle moves forwards	1000	1000
3	the vehicle moves forwards with its motor switched off	0	1000

The test is repeated with an instrument package of mass 500 kg attached to the vehicle. The force values in stage 1 remain unchanged.

Explain how the forces affect the motion of the vehicle in each of the three stages. Predict how carrying the instrument package affects the vehicle's acceleration in stage 1.

Your answer should use both Newton's first law and Newton's second law, and should include calculations.

A remotely operated research vehicle of mass 1000 kg is tested on a straight, level track. The horizontal forces during three stages of the test are shown in the table.

Stage	Situation	Driving force forwards in $N\text{N}$	Resistive force backwards in $N\text{N}$
1	the vehicle starts from rest	2000	500
2	the vehicle moves forwards	1000	1000
3	the vehicle moves forwards with its motor switched off	0	1000

The test is repeated with an instrument package of mass 500 kg attached to the vehicle. The force values in stage 1 remain unchanged.

Explain how the forces affect the motion of the vehicle in each of the three stages. Predict how carrying the instrument package affects the vehicle's acceleration in stage 1.

Your answer should use both Newton's first law and Newton's second law, and should include calculations.

2 Motion and forces

Question 42

Markscheme

2 Motion and forces

Question 42

Markscheme

2 Motion and forces

Question 42

2 Motion and forces Questions

2 Motion and forces

Question 42

2 Motion and forces Questions