Question

a force of 1210 n is needed to bring a car moving at 22.0 m/s to a halt in 20.0 s. what is the mass of the car?

Answer 1

The mass of the car is 1.10x$10^{3$Kg.

What is mass?

Mass is a quantitative measure of inertia in physics, a fundamental property of all matter. It is the resistance that a body of matter offers to change its speed or position under the influence of a force. The greater the mass of the object, the smaller the change caused by the force applied to it. In the International System of Units (SI), the unit of mass is the kilogram, which is defined as Planck's constant, which is equal to $6.62607015 \times10^3$ joules per second. One joule equals one-kilogram times one square meter per second. While the second and meter are already defined by other physical constants, the kilogram is defined by precise measurements of Planck's constant.

Therefore,

$V_{i}$= 22.0

$V_{f}$ = 0

t = 20.0 s

from the Impulse-momentum formula,

J= Ft =ΔP = MΔV

   (1210) (20sec) = M. (22.0)

                       M =$\frac{1210\times20.0}{22.0}$

                       M = 1.10x$10^{3$Kg.

To learn more about mass, refer;

https://brainly.com/question/18064917

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