Question 3.
A baseball has a mass of 145 g. A pitcher throws the baseball so that it accelerates at a rate of 80 m/s2. How much force did the pitcher apply to the baseball?
A. 65 N
B. 1.8 N
C. 0.6 N
D. 11.6 N
I chose B.
The correct answer is D.
We can use the formula F=ma, where F is the force applied, m is the mass of the object, and a is the acceleration.
Substituting the given values, we get:
F = (145 g) x (80 m/s^2)
Converting the mass to kilograms:
F = (0.145 kg) x (80 m/s^2)
F = 11.6 N
Therefore, the pitcher applied a force of 11.6 N to the baseball.