Acar starts from a stopped position at a red light. at the end of 30 seconds, its speed is 20 meters per second. what is the acceleration of the car?

a. 1.5 m/s
b. 0.7 m/s
c. 0.7 m/s 2
need heellpp

A=deltav/t
Vf=20m/s
Vi=0m/s
(20-0)/30
=0.667 m/s^2

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

Iwas going to ask that quesytion  sorry dude i dont  know : (    : /