Plane diving at 53° releases projectile from 730m

[HappyFlower]

Homework Statement

A plane, diving with constant speed at an angle of 53 degrees with the vertical, releases a projectile an altitude of 730m. The projectile hits the ground 5.00s after release. A plane, diving with constant speed at an angle of 53 degrees with the vertical, releases a projectile an altitude of 730m. The projectile hits the ground 5.00s after release. A) What is the speed of the plane? B) how far does the projectile travel horizontally during its flight? C) what are the horizontal and the vertical components of its velocity just before striking the ground?

Homework Equations

The Attempt at a Solution

I am having trouble understanding why my component will be -voxcos53* either than that I understand how to solve the problem.

 

[kuruman]

I am having trouble understanding why my component will be -voxcos53* either than that I understand how to solve the problem.

Which component is this? Usually components are written either as v_0x or v₀cosθ. I suspect you mean -v₀cos53^o. The negative sign is there because the plane is diving not ascending.

 

[HappyFlower]

Which component is this? Usually components are written either as v_0x or v₀cosθ. I suspect you mean -v₀cos53^o. The negative sign is there because the plane is diving not ascending.

I overthought that too much... thank you for the clarification.