Lms.courselearn.net
1. Physics helps individuals understand:@ Physics is the study of how things interact and their motions/forces. Performance of everyday activities depends on the forces and the impact on the object/individual. The study of time and space is quantum mechanics. The student of measurements is metrology.a. Time and Spaceb. Measurement*c. How things move and interactd. Temperature 2. If an individual throws an object onto a steep road, resistance will adjust the speed of the object. This is known as :@ Friction is the force that one surface exerts on another due to the roughness of the surface. In this case, the steep road acts as friction to change the speed of the object. The roughness of the road changes the friction, which changes the object’s speed. a. Weight*b. Frictionc. Volumed. Path Pattern 3. Imagine you are driving down the road, and all of a sudden, an object appears in the road. To avoid hitting the object, you press the breaks on the car. This applies a force, the velocity decreases, and the car stops. This activity of velocity change is known as what?@ Newton’s Second Law is the Law of Acceleration. It states that when a force acts on a body, the body accelerates or changes velocity. In addition, a force can act on a body to slow the velocity or acceleration. When, the break is pressed this changes the acceleration of the vehicle (the object). a. Newton’s First Law*b. Newton’s Second Lawc. Newton’s Third Lawd. Newton’s Fourth Law4. A person swinging a baseball bat during a game acts a vector causing an object (the baseball) to move or change it’s motion. This is an example of what?@ A force is an example of a vector quantity, which has magnitude and direction. This vector quantity causes an object to move or change their motion. In this case, the baseball bat acts as force to change the baseball’s direction or speed. *a. A forceb. A resistancec. A changed. A gravitational pull5. Which of the following is an example of a lever? Select all that apply.@ A lever is a bar or rod arranged to permit rotation about an axis (fulcrum). Levers can enable an object to be moved over long distances with minimal effort. All of the choices are considered levers. *a. Tweezers*b. Stapler*c. Nut Cracker*d. Mousetrap6. Machines are common in modern healthcare. For instance, consider a patient requiring a wheelchair and needing to use a ramp to enter a building. The ramp can act a simple machine and must be constructed to allow for ease of use and movement. This ease of use and movement provides what?@ Machines are devices designed to specifically make work easier and more efficient. This can be done by changing direction of the force, position of the force, and/or transformation of the force. Changing this force to make it easier is known as the mechanical advantage. A wheelchair ramp is an incline plane machine and provides a mechanical advantage with movement in a wheelchair. *a. Mechanical advantageb. Working advantagec. Motion advantaged. Physics advantage7. A wheelchair ramp length is 20 ft; the ramp height is 5 ft; and the effort to push the chair is 40 lbs. Using the mechanical advantage formula, what is the person’s weight?@The equation for the mechanical advantage is the effort multiplied by the ramp length should equal the weight of the person multiplied by the height of the ramp (effort x ramp length= person’s weight x ramp height). For this scenario, the equation would be effort (40lbs) x ramp length (20 ft)= person’s weight (x) x ramp height (5ft). Solving for x, the person’s weight is 160 lbs. a. 300 lbsb. 180 lbsc. 230 lbs*d. 160 lbs8. A quantity that has only magnitude (size) but no direction such as mass is known as:@ A Quantity with magnitude but no direction is defined as scalar quantity. a. BMIb. Vector*c. Scalard. None of the above9. BMI is calculated using what individual measurements?@ BMI is calculated using a person’s height and weight. a. Height and Mass*b. Height and Weightc. Weight and Volumed. Weight and Mass10. If the force of an object remains the same, but the mass of the object decreases to half, the acceleration of the cart:@ This is an example of Newton’s Second Law. When you push a cart, it will start with a greater speed with first pushed, but the rate at which is gains speed, remains the same. *a. Does not changeb. Halvesc. Doublesd. Changes unpredictably ................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.