A car is travelling along a straight road. a) (i) The driver has to brake suddenly. The thinking distance is 18 m and the braking distance is 55 m. Calculate the stopping distance of the car. (ii) State one factor that could increase the driver’s reaction time. (iii) State one factor that could increase the braking distance of the car. b) Air bags help to reduce injuries in a collision. Complete the sentence by putting a cross (X) in a box next to your answer. Air bags reduce injuries to drivers in a collision by a) decreasing the kinetic energy of the car b) increasing the time a resultant force acts on the driver c) decreasing the driver’s thinking time d) increasing the rate of change of momentum of the driver

Photo AI

A car is travelling along a straight road - Edexcel - GCSE Physics - Question 3 - 2017 - Paper 1

Question 3

A car is travelling along a straight road. a) (i) The driver has to brake suddenly. The thinking distance is 18 m and the braking distance is 55 m. Calculate the st... show full transcript

Worked Solution & Example Answer:A car is travelling along a straight road - Edexcel - GCSE Physics - Question 3 - 2017 - Paper 1

Step 1

Calculate the stopping distance of the car.

96%

114 rated

Answer

To calculate the stopping distance of the car, we can add the thinking distance and the braking distance together. The formula is:

$\text{stopping distance} = \text{thinking distance} + \text{braking distance}$

Substituting in the values: $\text{stopping distance} = 18 \, \text{m} + 55 \, \text{m} = 73 \, \text{m}$

Step 2

State one factor that could increase the driver’s reaction time.

99%

104 rated

Answer

One factor that could increase the driver’s reaction time is:

driving too long without a rest.

Step 3

State one factor that could increase the braking distance of the car.

96%

101 rated

Answer

One factor that could increase the braking distance of the car is:

poor or worn/faulty brakes.

Step 4

Complete the sentence by putting a cross (X) in a box next to your answer.

98%

120 rated

Answer

Air bags reduce injuries to drivers in a collision by:

a) decreasing the kinetic energy of the car
b) increasing the time a resultant force acts on the driver
c) decreasing the driver’s thinking time
d) increasing the rate of change of momentum of the driver

Join the GCSE students using SimpleStudy...

97% of Students

Report Improved Results

98% of Students

Recommend to friends

100,000+

Students Supported

1 Million+

Questions answered

A car is travelling along a straight road - Edexcel - GCSE Physics - Question 3 - 2017 - Paper 1

Worked Solution & Example Answer:A car is travelling along a straight road - Edexcel - GCSE Physics - Question 3 - 2017 - Paper 1

Calculate the stopping distance of the car.

State one factor that could increase the driver’s reaction time.

State one factor that could increase the braking distance of the car.

Complete the sentence by putting a cross (X) in a box next to your answer.

Join the GCSE students using SimpleStudy...

Other GCSE Physics topics to explore