Recent content by xshezsciencex

Three marbles have the same mass. Two of them touch each other and are aligned perpendicular to the path of marble 1. The velocity of marble 1 has magnitude v (initial)=10m/s and is directed at the contact point of marbles 2 and 3. After the elastic collision what are the speed and direction...

Two cars collide causing them to skid 17m at an angle of 30degrees north east before stopping. One car is 1180kg and the other is 1000kg. The coefficient of kinetic friction for a rubber tire slidin on pavement is 0.80 How would I determine the 1000kg cars' speed before the collision? My...

im even more confused >_<

A 1kg block is at rest on a horizontal frictionless surface touching the end of an unstretched spring of spring constant 200N/m. Tjhe other end of the spring is fixed to a wall. A 2kg block traveling at a speed v(initial)=4m/s collides with the 1kg block, and the two blocks stick together. I...

A certain spring exerts a restoring force F{sub x}(x)= -alpha x - beta x^2 if it is stretched or compressed, where alpha= 60N/m and beta=18N. The mass of the spring is negligible. How would I : (a) Find the potential energy function U(x) for the spring. Let U=0 when x=0. (b) An object with...

A player kicks a soccer ball (0.45kg). The player's foot is in contact with the ball for 3.0 H 10^-3 s and the force F(t)=[(6.0 * 10^6)t - (2.0 * 10^9)t^2 ]N for 0<_t<_3.0*10^-3s where t is in seconds. Find the magnitude of (a) the impulse of the ball due to the kick, (b) the...