Chapter 3 - Kinematics in Two Dimensions; Vectors

θ0

Where ________ is the angle of launch 3.7 Projectile Motion is Parabolic • Simplifying projectile motion by ignoring air resistance, it is parabolic, or, a projectile moves in a parabola • The basic form of a parabola is y= Ax + Bx2 Where A and B are constants, which is very similar to the equation for vertical displacement in projectile motion 3.8 Relative Velocity • Relative velocity is the sum of the vector velocities acting on an object from a frame of reference.

Vector

A quantity with both direction and magnitude

Scalar

A quantity with only magnitude

Tail-To-Tip

Drawing the tail of one vector from the tip of another to find the resultant vector

Sine

Ratio of opposite side to the hypotenuse of a right-angled triangle

Cosine

ratio of the adjacent side to the hypotenuse of a right-angled triangle

Tangent

ration of the opposite side to the adjacent side of a right-angled triangle