Newton's ____________ law shows how the force on an object is mathematically related to its ______________________ and _________. Think about a baseball player hitting a baseball. The more __________ the player uses, the more the baseball will __________________. Now think about the player hitting a baseball and a softball. If he wants both balls to accelerate the _________, he'll have to hit the softball with more less force, because the softball (177 grams) has _______ mass than the baseball (145 grams). Newton's Second Law of Motion = ???? ???? This equation can be rearranged to solve for acceleration. = ???? ???? Quantity Variable or Abbreviation Unit Unit Symbol F N kg acceleration a meters per second per second m/s2 A delivery man named Sam pushes a loaded dolly with a total mass of 25 kilograms. Initially, the dolly accelerates at 0.2 m/s 2 . What force did Sam apply to the dolly? ???? = ? ???? = kg ???? = m/s2 ???? = ???? ???? = 25 kg 0.2 m/s2 = N William is driving a 1,000-kilogram car. The car's engine applies a force of 5,000 newtons. What's the acceleration of the car? ???? = N ???? = kg ???? = ? ???? = ???? ???? = 5,0000 N 1,0000 kg