A youngster throws a ball horizontally at speed of 10 ms-1 from a bridge 50 m above the river.

Ignore air resistance.

What is the velocity of the ball just before it lands?

When measuring volume, why is it important to use the correct tools and units to attain the greatest accuracy? use specific examples from the lab to support your answer. (5 points)

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47

The strong nuclear force acts over a small distance than the electrostatic force. true or false