What’s on quiz tomorrow (4-16-24)

• Definition of force

  A push or a pull exerted on an object that may change the motion or shape of the object; force has strength and direction
• What is the international unit of force

  Newtons
• When objects collide…

  they have equal BUT opposite forces
• The same force is applied separately to 2 different objects, A and B. B has twice the mass of A there for B acceleration is half of A.
• A contact force is used when

  Pushing an object
• The gravitational force from a planet is large and pulls objects towards it
• The larger the objects, the larger the gravitational force
• If two basketballs are sitting 1 meter apart and not moving, the gravitational force between the objects is weak because their masses are small
• If somebody drops an object, why doesn’t the gravitational force keep them from dropping objects

  There is none between the hand and the object
• Planet A and B are the same size, planet B is 3 times bigger so the mass is 3 times bigger
• Define gravity

  A force of attraction between objects due to their masses