The bowling ball is whizzing down the bowling lane at 4 m/s. if the mass of the bowling ball is 7 kg, what is its kinetic energy?

What are the factors that affect the resistance of a wire?

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?

In the absence of friction gravity and all other external forces