A1756 kg car comes to a stop in 2 seconds from a speed of 45 m/s. what was the braking force of the car?

The braking force of the car  is 39510 N

Explanation

Given:

Mass  of the car = 1756 kg

Time s= seconds

Initial velocity u = 45 m/s

To find:

The braking force of the car=?

Solution:

The equation of motion is v=u+at

Where  

u = initial veloctity

v = final velocity

a = acceleration

t = time

let the final velocity v=0 m/s

substituting the values  we get

v=u+at

 Now according to Newton's second law of the braking force can be calculated as

|F|=|m| |a|

F=|1756| |-22.5|

F= 1756*22.5

F=39510 N

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explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."