17. a car traveling initially at 5.5 mis accelerates at a rate of 1.2 m/s's for 23 seconds. what is its velocity at the
end of the acceleration?

33.1 m/s

Explanation:

where v is final velocity of the car   is initial velocity of the car, a is acceleration due to gravity and t is time taken by the car. The final velocity is the velocity at the end of acceleration.

In this question, = =5.5m/s, t=23 seconds, a=

Substituting the above figures into the equation we obtain

v=5.5+(1.2*23)=33.1 m/s

Therefore, the velocity of the car at the end is 33.1m/s

d) physical means can be used to separate the components of air.