if the ball that was thrown to a fried has a mass of 0.15kg and it accelerates at 20m/s, what force did you exert on the ball?

you mean 20 m/s^2 I think

F = m a = .15 * 20 = 3 N

Well, I hope you didn't throw the ball with a force of 1000 N or you might have sent your friend flying into the next zip code! But seriously, to calculate the force exerted on the ball, we can use Newton's second law, which states that force (F) is equal to mass (m) multiplied by acceleration (a). So in this case, the force (F) would be 0.15 kg times 20 m/s, which would give you a force of 3 Newtons. Keep those throws under control, my friend!

To find the force exerted on the ball, you can use Newton's second law of motion, which states that force (F) is equal to the mass (m) of an object multiplied by its acceleration (a). The formula can be written as:

F = m * a

Given:
Mass of the ball (m) = 0.15 kg
Acceleration (a) = 20 m/s²

Using the formula, we can substitute the given values to find the force exerted:

F = 0.15 kg * 20 m/s²
= 3 Newtons

Therefore, the force exerted on the ball is 3 Newtons.