Recent content by mr1709

1. A baseball of mass 0.30kg is pitched at 70m/s (fwd) at a batter. The ball knocks the stationary 1.7kg ball out of the batters hands and the ball rebounds at 48m/s (backwards). What is the final velocity of the bat as it leaves the batters hand? variables m1 = 0.30 vi= 70 vf = -48 m2= 1.7...

Its the exact way the question was worded. Il post the websites solution. I may be wrong but i see it as the spring is initially at rest in equlibirum position with the spring already attached. Then someone pulls it down Solution Et= Et' Ee = Ek + Eg 0.5kx^2 = 0.5mv^2 + mgy k = (mv^2 +...

1. A spring is suspended from a ceiling and a 256g mass is attached to it and pulled down to stretch the spring by 18.2cm The mass is released and travels through the equilibirum position with a speed of 0.746m/s. Calculate the force of the spring constant Solution Et= Et' Ee = Ek + Eg 0.5kx^2...

Homework Statement The record distance for the hammer throw is about 87m. to achieve this distance, an athlete must produce a centripetal acceleration of nearly 711 m/s^2. a) Given a radius of 1.21 m calculate the speed of the ball when it is released b) The athlete let's go when the ball is...

Im not sure. It was a print out sheet my physics teacher gave the class to practice for our upcoming test. Thanks for input

1. Homework Statement A car is moving along a banked highway on a ramp that is banked at an angle of 14 degrees to the horizontal. The radius of curvature of the bank is 264m and the coefficient of static friction is 0.67. What is the max speed that the car can travel and safely stay on the...