3. What is the acceleration of a cart with a F = 80 N and m = 32 kg? * 2.0 m/s^2
O 2.5 m/s^2
2.8 m/s^2
2.7 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.

Sound energy is produced when an object vibrates. examples are 1- a balloon popping2-a whistle3- a waterfall

The relationship of both of them

It is increased due to the doppler effect. (apex)