## A 47 kg mass is moving across a horizontal surface at 8 m/s. What is the force required to bring the mass to a stop in 4.1 seconds? (Hint: T

Question

A 47 kg mass is moving across a horizontal surface at 8 m/s. What is the force required to bring the mass to a stop in 4.1 seconds? (Hint: This is a multi-step calculation and your answer should come out to be negative). Write your answer to one decimal place.

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Physics
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2021-07-21T05:14:07+00:00
2021-07-21T05:14:07+00:00 1 Answers
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## Answers ( )

Answer:

Force = -91.7 Newton

Explanation:

Given the following data;

Mass = 47 kg

Time = 4.1 seconds

Initial velocity = 8 m/s

Since the object comes to a stop, its final velocity would be equal to zero.

To find the force required to bring it to stop;

First of all, we would determine the acceleration of the object;

Mathematically, acceleration is given by the equation;

Substituting into the equation;

Acceleration, a = -1.95 m/s²

Next, we would determine the force required to bring the object to stop;

Force = -91.65 ≈ 91.7 Newton