posted by Ralph .
As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 its mass is 0.145.
A) What is the baseballs acceleration in m/s^2 and in g's?
B) What is the size of force acting on it?
Is the 0.005 number supposed to be seconds? What about the mass,
In physics, numbers without units are useless. You MUST learn that.
A) acceleration = a = (speed change)/(time) = 6000 m/s^2
Divide that by 9.8 m/s^2 for the number of g's
B) Use F = m*a
m = 0.145 kg, I assume
The force will be in newtons.
Yes it is .005 s. And you assume right it is 0.145 kg. I am sorry of not putting in the units. I am really struggling with Physics.
i still love you ralph