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

Step-by-step explanation:

v=70km/h

t=7 seconds

u=0

first change the unit km/h to m/s

1000km=1m

3600seconds=1h

v=70km/h ×1000km/3600s

v=19.44m/s

acceleration =final velocity(v)-initial velocity(u)/time

acceleration=19.44m/s-0m/s=19.44m/s

19.44/7=2.78 m/s

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation: