Please choose all that are correct. Select one or more: a. The spring constant is a universal constant, meaning it is the same for all springs b. To maintain the same acceleration, when the force applied is halved, mass must also be halved O C. A force pointing in the opposite direction of the normal force is called the abnormal force O d. A force can be a scalar e. Friction is a fundamental force f. Newton's third law means that when you slap the roof of a car with your hand, the roof of the car slaps your hand as well g. An object can have more than one force act on it in the same direction O h. If an object has zero velocity, and then a non-zero net force is applied on it, its velocity will become non-zero i. A free-body diagram means that there cannot be any tension applied O j. An objećt flying through vacuum does not have a normal force acting on it O k. If there is only one force acting on an object, that force is equal to the net force A force cannot be negative 口口

Please choose all that are correct. Select one or more: a. The spring constant is a universal constant, meaning it is the same for all springs b. To maintain the same acceleration, when the force applied is halved, mass must also be halved O C. A force pointing in the opposite direction of the normal force is called the abnormal force O d. A force can be a scalar e. Friction is a fundamental force f. Newton's third law means that when you slap the roof of a car with your hand, the roof of the car slaps your hand as well g. An object can have more than one force act on it in the same direction O h. If an object has zero velocity, and then a non-zero net force is applied on it, its velocity will become non-zero i. A free-body diagram means that there cannot be any tension applied O j. An objećt flying through vacuum does not have a normal force acting on it O k. If there is only one force acting on an object, that force is equal to the net force A force cannot be negative 口口