While her degree is in Biochemistry, El has had a particular passion for physics since taking it for her A Levels – attending the renowned Institute of Physics to further her knowledge. Because remote schooling was at its peak, she quickly developed her skills as an online tutor and became invested in the success of her students at such a crucial time. After setting her sights on becoming a teacher, she took her PGCE in Secondary Science at the University of Reading during the height of the pandemic lockdowns. Read moreĮl earned her BSc in Biochemistry from the University of Wolverhampton. If you would like 1-2-1 tuition with Andreas you can find his profile on our tuition platform. Each lesson he delivers is built around the specific requirements of exam boards, meaning there’s always a focus on maximising marks. He tailors his approach to the individual needs of each student, using effective tried-and-tested teaching methods to keep lessons fun, engaging and productive. He still loves to support others embarking on their own academic journeys, whether they need comprehensive tuition, coaching on their exam technique, or preparation for university interviews.Ī popular tutor thanks to his warm and approachable personality, Andreas’ ethos is that top grades are made outside the classroom and that learning at home is key. ![]() Before studying medicine, he took a year out to tutor GCSE and A Level students full-time. He did an intercalated bachelor’s in his third year and therefore holds a first class degree in Medical Sciences with Mathematics and Computing. These different safety features decrease the rate of change of momentum, which decreases the force of the collision on any people within the car.Andreas is in his fifth year studying medicine at University College London. Crumple zones refer to the areas of a car that are designed to deform or crumple on impact. Car safety features such as seatbelts, airbags and crumple zones all work to change the shape of the car, which increases the time taken for the collision. The force of the collision is equal to the rate of change of momentum. Car safety featuresĭuring a collision there is a change in momentum. Momentum is a vector and they are in opposite directions so add up to zero. These extra bits of momentum add nothing to the whole system. So in a collision the two objects each gain the same momentum but in opposite directions. The change in momentum is given by the force multiplied by the time it acts for. This means that the objects will each have the same size force acting for the same amount of time. When objects collide, they will exert equal and opposite forces on each other all the time they are in contact. The equation shows that the force involved is equal to the rate of change of momentum. ![]() ![]() time taken ( t ) is measured in seconds (s).change in momentum ( mv - mu ) is measured in kilogram metres per second (kg m/s).You can combine two equations to show how to calculate the force involved when a change in momentum happens: ![]() Calculating the rate of change of momentum When a resultant force acts on an object that is moving, or able to move, there is a change in momentum.
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