AP Physics 1 Questions with answers/ 100% verified. 2023 updates

AP Physics 1 Questions with answers/ 100% verified. 2023 updates What two entities comprise a vector? - Magnitude and direction What do you do with any vector that is not on either the x or y axis? - Break it up into x and y components using trig, add up the components. How are velocity and speed different? - Velocity has a direction and speed does not have direction. What quantity is calculated from slope of the displacement versus time graph? - velocity What does upward slope on a displacement versus time graph imply about the velocity. - The velocity is positive What is acceleration? - How quickly you change velocity. What is the area under the velocity time graph? - Displacement What is the y intercept of the velocity time graph? - The initial velocity, (Vo in the formulas) What is the area under the acceleration versus time graph? - The CHANGE in velocity. What is the horizontal acceleration of projectiles? - ZERO What direction controls time in falling body and projectile motion problems? - Vertical direction What do you know about two objects that are launched at different horizontal velocities? - They fall, vertically, the by the same amount in the same time. What equation describes the distance that a dropped object falls "t" seconds after it started moving? - x=(1/2)at^2 Remember, the word "dropped" implies no initial velocity. What equation describes the distance that a horizontally launched projectile falls t seconds after it started moving? - x=(1/2)at^2 ...Horizontal velocity does not affect the time of fall. What equation describes the speed of a dropped object "t" seconds after it started moving? - V=Vo + at ...The word "dropped" means no initial velocity. What equation describes the speed in the x-direction of a projectile "t" seconds after it started moving? - Vx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction. What equation describes the speed in the y-direction of a projectile "t" seconds after it started moving? - Vy=Vyo + gt ...Watch the signs. What is implied when an object is not accelerating in the x direction? - The body is moving at a constant velocity What is implied when an object is not accelerating in the y direction? - g=zero so h=(Vyo)t When is sum of force (net force) zero. - When a body is moving at a constant velocity or not moving at all.