Question

PLEASE HELP ASAP

Part A: A 30-kilogram mass is moving across a horizontal surface at 5.0 m/s. The mass comes to
a stop over 6 seconds. What is the acceleration?

Part B: What is the magnitude of the force required to bring the object to a stop?

Answer 1

Below

Explanation:

acceleration = Δv / Δt = - 5/6 m/s^2

( negative sign shows it to be a deceleration)

F = ma

= 30 ( -5/6) = -25 N or 25 N in the direction opposite of the velocity ( like a frictional force)