Question

newtons second law quick check
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? (1 point)
65 n
18 n
11.6 n
0.6 n

Explanation:

Step1: Convert mass to kg

Given mass \(m = 145\ g=\frac{145}{1000}\ kg = 0.145\ kg\) (since \(1\ kg=1000\ g\)).

Step2: Apply Newton's second law \(F = ma\)

Here \(a = 80\ m/s^{2}\), \(m=0.145\ kg\). Then \(F=(0.145\ kg)\times(80\ m/s^{2})\).

$$F = 0.145\times80=11.6\ N$$

Answer:

11.6 N