Kinematics

Question 1

kinematics

Answer 1

the description of motion in terms of an object’s position, velocity, and acceleration

Question 2

displacement

Answer 2

change in position, vector

Question 3

velocity

Answer 3

how fast an object’s position changes, vector

Question 4

speed

Answer 4

the magnitude of a velocity vector, is scalar, will always be zero or positive

Question 5

acceleration

Answer 5

how fast an object’s velocity changes, a vector

Question 6

uniformly accelerated motion

Answer 6

motion in which the object’s acceleration is constant

Question 7

free fall

Answer 7

motion which takes place under constant acceleration, moving only under the influence of gravity

Question 8

gravitational acceleration

Answer 8

near the surface of earth, approximately 10m/s^2

Question 9

trajectory

Answer 9

the path an object would follow

Question 10

projectile motion

Answer 10

the motion of an object experiencing only the constant, downward acceleration (free fall), uniformly accelerated motion

Question 11

launch angle

Answer 11

the angle the initial velocity vector makes with the horizontal