Consider an archery bow as behaving like a spring with a spring constant of 493 N/m. If an archer pulls the bowstring back for a distance of 42 cm, what is the elastic potential energy of the "loaded" bow?
If the mass of the arrow is 39 grams, what is its speed as it leaves the bow?
1 answer
During a free kick at a soccer playoff game a 0.5 kg ball at the peak of the kick 14.7 m above the field had a kinetic energy of 34.0 J. How fast was the ball booted by the player on the field?
1 answer