A car travelling at 14 m/s has to make an emergency stop so applies the brakes and it takes 1.5s to become stationary. What distance has the van travelled in that time?
Assuming constant deceleration we can use the equation s = t(u+v)/2, where u=14m/s, v=0m/s and t=4s. Inputting these values we have that the distance travelled s = 1.5(14)/2 = 21/2 = 10.5m
u = the starting velocityv = the final velocityt = times = the distance travelled
CJ
Related Physics GCSE answers
All answers ▸A 950 kg car accelerates from 0 to 33 m/s in 11 seconds. a) Calculate the acceleration of the car b) Calculate the force needed to produce this acceleration c) The car claims a top speed of 110 miles/hr. Explain why there must be a top speed for any car
explain how the resistance of a filament lamp changes as the potential difference across it increases
Please explain air resistance.
Describe the changes in forces experienced by a parachutist after they have started falling