, 08.11.2019 11:31 emory238

# When you drop a 0.43 kg apple, earth exerts a force on it that accelerates it at 9.8 m/s^2 toward the earth’s surface. according to newton’s third law, the apple must exert an equal but opposite force on earth. if the mass of the earth 5.98 × 1024 kg, what is the magnitude of the earth’s acceleration toward the apple? answer in units of m/s^2

### Another question on Physics

Physics, 21.06.2019 17:20
You have been called to testify as an expert witness in a trial involving a head-on collision. car a weighs 1515 lb and was traveling eastward. car b weighs 1125 lb and was traveling westward at 44.0 mph. the cars locked bumpers and slid eastward with their wheels locked for 22.5 ft before stopping. you have measured the coefficient of kinetic friction between the tires and the pavement to be 0.750 . how fast (in miles per hour) was car a traveling just before the collision? (this problem uses english units because they would be used in a u.s. legal proceeding.)