Pre Entrance Test for Nursing: Science, Physics

Displacement - Correct Answer-the distance that an object is from some starting point and it is measured in units of length motion - Correct Answer-described by displacement, velocity (speed) and acceleration speed - Correct Answer-the distance traveled by an object per unit of time Speed= Distance Traveled/Time velocity - Correct Answer-speed in a given direction; therefore tells us two things about a moving objects its speed and its direction acceleration - Correct Answer-rate of change in velocity deceleration - Correct Answer-sometimes used to refer to negative acceleration or a decrease in velocity and can cause a change in direction Acceleration formula - Correct Answer-Acceleration = final velocity - original velocity ------------------------------------- time Momentum - Correct Answer-equal to the mass of an object multiplied by its velocity momentum = mass x velocity conservation of momentum - Correct Answer-states that the total momentum of an isolated system is always constant newtons first law - Correct Answer-law of inertia; states that objects in motion tend to stay in motion and that objects at rest tend to stay at rest inertia - Correct Answer-property of matter that resists any change in motion Newton's second law - Correct Answer-describes the relationship between force, mass and acceleration; it states that the force applause on an object equals the mass of the object times its acceleration force = mass x acceleration (or f=ma) Newton (N) - Correct Answer-is the unit that represents a force that accelerated a mass of 1 kilogram 1 meter per second gravity - Correct Answer-the force of attraction between all objects in the universe torque - Correct Answer-perpendicular force times the lever arm lever arm - Correct Answer-the distance from the axis of rotation to the point where the force is exerted Newton's third law - Correct Answer-states that for every action there is an equal and opposite reaction energy - Correct Answer-ability to do work; 2 types What are the two types of energy? - Correct Answer-kinetic, potential kinetic energy - Correct Answer-energy associated with motion potential energy - Correct Answer-energy stored in a body because of its position work - Correct Answer-the product of the force applied to an object and the distance through which the force is applied work = force x distance