A1420-kg car is traveling with a speed of 12.4 m/s. what is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 78.0 m?

1419.01436 N

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

The force on the car

Magnitude of the horizontal net force that is required to bring the car to a halt is 1419.01436 N

So net force will be F = 1420×0.985 = 1399.61 N              

Explanation:

We have given mass of the car m = 1420 kg

Initial velocity of the car u = 12.4 m/sec

As the car finally stops final velocity v = 0 m/sec

Distance after which car is halt s = 78 m

Now according to third equation of motion

Magnitude of acceleration

So net force will be F = 1420×0.985 = 1399.61 N

it breaks and dirupture other materials and other sencews from the bottom

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.