a 63.0-kg sprinter, starts a race with an acceleration of
4.200
m/s
2
4.200m/s2
. What is the net external force on him?
F = Ma.
To find the net external force on the sprinter, we can use Newton's second law of motion, which states that the net force acting on an object is equal to its mass multiplied by its acceleration (F = m * a). In this case, the mass of the sprinter is given as 63.0 kg, and the acceleration is 4.200 m/s^2.
Using the given values, we can substitute them into the formula:
F = m * a
F = 63.0 kg * 4.200 m/s^2
Calculating this:
F = 264.60 N
Therefore, the net external force acting on the sprinter is 264.60 N (Newton).