Mark off and measure the distance of the throw. Time the throw with the stopwatch. This will give you the feet per second. If you want miles per hour take that and multiply by 0.68
Stopwatch and measuring device.
A cheap dog ball thrower can be found on a variety of websites like Amazon, GoDogGo, and DigTuff. Other places to look for an inexpensive dog ball thrower are eBay and Chewy.
They have to get hit by the ball to get out. Or, the person can catch the ball in which case the thrower is then out.
A the moment when the ball just touches the thrower's hand, it will have the velocity with which it was thrown and the acceleration will be equal to the acceleration due to gravity at the place acting vertically downwards.
Ball thrower machines are an invaluable tool for helping players practice fielding skills as well as sharpening their infield and outfield skills. Machines can be purchased on Amazon or eBay.
The speed/force which was imparted to it when it left the thrower's hand.
Relative to the thrower, the ball appears to be moving at 5 km/h.
Assuming the train continues moving at constant speed, the ball would travel at the same speed as the thrower.
Hitting can be broken down into three segments; SEE, REACT, SWING. You watch the ball in the pitcher's hand during the windup and you watch the ball leave the pitcher's hand when it is thrown and you watch the spin of the ball as it comes towards the plate. That is SEE. You determine what the pitch is (fastball, curveball, etc.), you determine where the ball is going to go and you determine whether it is headed towards an area that you think you can get good wood on it. That is REACT. You swing if you like the pitch or don't swing if you don't like the pitch. That is SWING. It doesn't make any difference whether you are playing with a tennis ball or a golf ball or a baseball. The theory and mechanics are the same. So, to answer your question I would say the more you practice the better you will be, regardless of the type of ball you use to practice with.
The position abused by steroids in base ball are batter, and thrower.
Zero
they carry a watch, stopwatch and no Cards