To find the net external force required to give the suitcase an acceleration, we can use Newton's second law of motion, which states that the net force acting on an object is equal to the mass of the object multiplied by its acceleration.
The formula for Newton's second law is:
F = m * a
Where:
F is the net force (in newtons, N)
m is the mass of the object (in kilograms, kg)
a is the acceleration of the object (in meters per second squared, m/s^2)
In this case, the mass of the suitcase is given as 35.7 kg, and the acceleration is given as 2.8 m/s^2. Plugging these values into the formula, we can calculate the net external force:
F = 35.7 kg * 2.8 m/s^2
Calculating the multiplication gives us the value of the net force on the suitcase.