A 5 meter ladder leans against a wall. The bottom of the ladder is 1 meter from the wall at time t = 0 and slides away from the wall at 1 meters per second. Find the velocity of the top of the ladder at time t = 2.

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

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.

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.