Question

Which term describes an object moving in two dimensions as it is acted on by gravity?

A. Projectile motion
B. Motion
C. Influence
D. Constant velocity

Answer 1

Hello!

The answer is: A. Projectile motion

Why?

Projectile motion involves movement in at least two dimensions (x and y).

In projectile motions, the movement on horizontal axis (x) goes at a constant velocity while in the vertical axis (y), it goes at a variable velocity because of the acting of the gravity force acceleration
`(9.81 (m)/(s^(2) ) )` and it's totally independent of the horizontal acceleration.

We can calculate the horizontal and vertical distance by using the following formulas:

`x=v_(xi)*t\\y=v_(yi)*t-(1)/(2)*g*t^(2)`

Have a nice day!