brakes low-speed than e) the state of the road impacts. f) the amount of friction between the tyre and the road Digital: Stopping surface. distances interactive Describe the factors affecting a driver’s reaction time P1.25 including drugs and distractions P2i Crash P1.26 Explain the dangers caused by 1) Ask students to Students test different designs Show students two Hazards large decelerations… suggest different causes of crumple zone on a dynamics statements and discuss of crashes. Ask them to trolley. which of the two then think about what statements is correct: determines the amount of ● If two vehicles, both The deformation of a piece of P1.26 estimate the forces damage and what safety travelling at 60 mph, Blu-tack® can be used to involved [in large features are built into indicate relative force. collide head-on, the decelerations] in typical cars to mitigate dangers crash is much worse However, much better situations on a public road. to people. quantitative data will be than a car travelling at 60 mph hitting a wall. obtained if a force sensor is ● It's only worse 2) Show students a video used. Alternatively, a because there are two on the internet showing smartphone that includes an lots of people to be the landing of the Mars accelerometer can be used. Pathfinder probe or the injured and two cars to be damaged. The forces Spirit and Opportunity Students should find that the landers. These missions on the car are just the presence of some kind of same. used airbags to cushion crumple zone affects the impact the final descent of the force. probe. Ask students to try This question addresses to explain how the a common
P1.25 brakes e) the state of the road f) the amount of friction between the tyre and the road surface. Describe the factors affecting a driver’s reaction time including drugs and distractions low-speed than impacts. Digital: Stopping distances interactive P2i Crash Hazards P1.26 P1.26 Explain the dangers caused by large decelerations… estimate the forces involved [in large decelerations] in typical situations on a public road. 1) Ask students to suggest different causes of crashes. Ask them to then think about what determines the amount of damage and what safety features are built into cars to mitigate dangers to people. 2) Show students a video on the internet showing the landing of the Mars Pathfinder probe or the Spirit and Opportunity landers. These missions used airbags to cushion the final descent of the probe. Ask students to try to explain how the Students test different designs of crumple zone on a dynamics trolley. The deformation of a piece of Blu-tack® can be used to indicate relative force. However, much better quantitative data will be obtained if a force sensor is used. Alternatively, a smartphone that includes an accelerometer can be used. Students should find that the presence of some kind of crumple zone affects the impact force. Show students two statements and discuss which of the two statements is correct: ● If two vehicles, both travelling at 60 mph, collide head-on, the crash is much worse than a car travelling at 60 mph hitting a wall. ● It's only worse because there are two lots of people to be injured and two cars to be damaged. The forces on the car are just the same. This question addresses a common
GCSE-Science-Term-1-Detailed-Planning-Document.docx