A car moves on the first half of the road with a speed of 60km/h and the rest of it moves at a speed of 15km/h in the first half and 45km/h in the second half find the average speed of the car. paint on the whole road

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.

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)