In a game of pool, a 0. 4 kg cue ball is traveling at 0. 80 m/s when it hits a slower striped ball moving at 0. 38 m/s. After the collision, the striped ball moves off at 0. 62 m/s. What is the magnitude of the final velocity of the cue ball? Assume all pool balls have the same mass. 0. 20 m/s 0. 56 m/s 1. 0 m/s 1. 8 m/s.

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

What is the momentum of a 2 kg object moving at 15 meters per second

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?