Originally Posted by Chas Tennis
An instruction video, Volley Secrets, that supports the view of step forward as you volley.
Why do you think moving forward relatively slowly at maybe 10-15(?) feet per second, slow compared to the ball velocity, adds so much stick to your volley?
body moving 10 ft/sec.... but the arm is also moving forward, so the combined speed is bigger.
body moving forward is more of a necessity to find the ball.... i can hit a volley almost equally hard without body moving forward if the ball is within reach.
you do swing to hit a penetrating volley.... but beginners swing the wrong thing.. they move the racket head, but the elbow is almost static, so there is no mass behind the collision.
Oscar has a video about 'leading with the hand'... it works for his teaching... but i would teach 'moving the elbow at the same speed as the racket head'..... this way you keep the face angle the same, and you have mass in the collision.
with a firm grip, let's say the collision is almost elastic.
m1v1 + m2v2 = m1v1' + m2v2'
1/2 m1 v1 (sq) + 1/2 m2 v2 (sq) = 1/2 m1 v1' (sq) + 1/2 m2 v2' (sq)
in other words, conservation of momentum and kinetic energy.
and you can plug in a few numbers, and realize that to achieve the maximum v2' (ball speed), the key is to increase m1 !
so you make the collision unit bigger, not just the racket head, but the entire arm/racket unit.