Первый слайд презентации
What’s the Connection? Forces and Motion
Слайд 2: What’s the Connection?
Speed – is distance (metres ) / time (seconds) and is measured in metres per second time metres seconds metres per second distance
Слайд 3: What’s This?
What do distance-time graphs show? A graphical representation of a journey showing how long it took and how far it was. The speed can also be calculated using the gradient of the lines.
Слайд 4: What’s the Connection?
Momentum – is calculated by mass (kg) x velocity (m/s) and has the units kg m/s kg m/s Kg m/s velocity mass
Слайд 5: What’s the Connection?
Crumple zone – the area in a vehicle which, in the event of a crash, is designed to buckle at the front and or the back to reduce the impact of the force on the passengers crash vehicle front back buckle
Слайд 6: What’s the Connection?
Factors that affect reaction times – all of these can distract a driver and reduce their reaction time therefore not stopping the car as quickly as might be necessary tiredness drugs phone talking alcohol
Слайд 7: Why?
Stopping distance is the distance a vehicle travels in order to stop. It is calculated by adding the thinking distance to the braking distance. If I am travelling in a car and apply the brakes, why does the car still travel after I have seen the danger? The thinking distance is the distance travelled by the vehicle once the hazard has been spotted and the driver reacts. The braking distance is the distance travelled by the vehicle once the driver has applied the brakes. What are these?
Слайд 8: What’s Being Described?
Newton’s first law – balanced forces An object travelling at a constant speed, or remaining stationary has all the forces balanced and the resultant force is zero. Terminal velocity I am a skydiver and have reached a point where my weight is balanced by resistive forces – how fast am I travelling?
Слайд 9: What are the Words?
MOMENTUM ACCELERATION CONSERVATION FORCES NEWTON OETMMMNU CEEAINACLRTO OSRAINCNEVTO OCSFRE ETNNWO What are the Words?