Identify the situations that have an unbalanced force. Check all that apply. 1. A weight speeds up as it falls through the air

2. A garbage can is at rest on the ground

3. A hockey puck moves in a straight line at a constant speed

4. A bumper hit by another car moves off at an angle

5. A balloon flies across the room when the air is released

Since you have not included the experiment situation and the data, of course, i can not give you specific details about it. but i can you with this question.1) i will assume that the motion is projectile (parabolic) motion.2) yes, the horizontal distance depends on the horizontal velocity as, naming vx the horizontal velocity and t the time, it is: x = vx × t3) now, observe that the flight time depends on the vertical velocity as, naming voy the initial vertical velocity, t the time and y the vertical distance before reaching the ground: y = yo + voy×t - gt² / 2.the higher the initial vertical velocity (voy) the longer the object will be flying and so t will be higher in the equation for the horizontal distance.that explains the relationship between the horizontal distance and the horizontal velocity.

The law of conservation of momentum will be the same no matter where you apply it.the equation will be  77.4 + m (mass of canister) *3.6

The answer is n = 2  and    n = 3