Answer:
20,850 N
Explanation:
We can solve the problem by using second Newton's Law:
[tex]F=ma[/tex]
where
F is the force
m is the mass
a is the acceleration
In this problem, we have:
m = 70 kg is the mass
[tex]a=-30 g=-30 (9.8 m/s^2)=-294 m/s^2[/tex] is the acceleration (which is negative, because it is a deceleration)
So, we can use the equation above to find the force:
[tex]F=(70 kg)(-294 m/s^2)=-20580 N[/tex]
and the negative sign simply means that the force is in the opposite direction to the motion.
