Recent content by starJ9

Homework Statement Three beads are placed on the vertices of an equilateral triangle of side d = 1.8 cm. The first bead of mass m1 = 150 g is placed on the top vertex. The second bead of mass m2 = 55 g is placed on the left vertex. The third bead of mass m3 = 85 g is placed on the right...

The normal force would be mgcos(), 780kg*9.8m/s^2*cos(2.3) = 7638N. The friction force acts 180 degrees from the car. I'm assuming the distance is only 20.5m. -FK*s = mgy - 1/2(mv^2) -FK*s = 780kg*9.8m/s^2*20.5m - 1/2(780kg*32.2^2) -FK*s = -248430 J FK*s = 247666 J

Homework Statement Suppose a car approaches a hill and has an initial speed of 116 km/h at the bottom of the hill. The driver takes her foot off of the gas pedal and allows the car to coast up the hill. Randomized Variablesvi = 116 km/h m = 780 kg h = 20.5 m a = 2.3 ° Part (a) If the car has...