a car advertisement states that a certain car can accelerate from rest to 70km/h in 7 seconds. find the cars acceleration

+1

(1) Answers

jovenloco

a = (v2 - v1)/t= acceleration formula
a = (70 - 0)/7
a = 10 km/hr/sec
-----
It's better to use as few units as possible.
10 km/hr = 10 km*1000 m/km/(1 hr*3600 sec/hr) = 25/9 m/sec
a= 25/9 m/sec/se