How did the passenger use friction to stop the taxi?

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Passenger Used Door Friction to Halt Unconscious Driver's Taxi

A passenger, Winnie Lee, successfully brought a taxi to a stop by intentionally creating friction between her car door and a barrier after the driver lost consciousness on the East Coast Parkway. This action effectively slowed the vehicle until it came to a complete halt.
Creating Friction with the Door
Lee, aged 36, found herself in a precarious situation when the taxi she was travelling in with her six-year-old son began to drift towards the road divider. She noticed the vehicle veering towards the barrier and, in a moment of panic, decided to use her door as a means to slow the car. By forcing her door against the barrier, she generated friction, which acted as a braking force against the taxi's momentum.
The Physics of Friction and Deceleration
Friction is a force that opposes motion when two surfaces are in contact. In this instance, the resistance between the taxi's door and the barrier created an opposing force to the vehicle's forward movement. General principles of physics dictate that applying such a resistive force over time will cause an object in motion to decelerate, or slow down, until it eventually stops.
Assistance from Another Motorist
The unusual manoeuvre attracted the attention of another motorist who had observed the taxi swerving erratically. This individual promptly stopped to offer assistance to Lee and her son, ensuring their safety after the vehicle had come to a standstill. Police were alerted to the incident around 12:50 pm on July 6.
Driver's Condition and Ongoing Investigation
The 73-year-old taxi driver was discovered unconscious and was transported to Tan Tock Seng Hospital, where he remained in the same condition as of July 8. His employer, ComfortDelGro, confirmed that the driver is receiving medical attention and requested privacy for him and his family. Authorities have stated that investigations into the incident are currently ongoing.

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How did the passenger use friction to stop the taxi?

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