The vertical movement of the projectile is described by:
y = H - gt² / 2
When the cannonball is on the ground, y= 0 so:
0 = H - gt² /2
Solving for t:

The horizontally movement of the projectile is described by:
x = v₀t
Solving for v₀:
v₀ = x/t
v₀ = 175 m / 2.8 s
v₀ = 61.5 m/s
I got you
Explanation:
normal force = 400 g cos 35
friction force up slope = .6 (400 g) cos 35
weight component down slope = 400 g sin 35
400 a = 400 g sin 35 - .6 (400 g cos 35)
a = g (sin 35 - .6 cos 35) = .082 g
I hope this helps you
Explanation:
hopefully that makes sense. the position doesn't change over the 5 seconds, meaning it's stopped but time still continues. then when the slope is negative this shows the bear's position becoming negative (backing up, changing direction).
Answer:
A group of atoms where the magnetic fields of the atoms point in the same direction is a magnetic domain.
Explanation:
- In every magnet's magnetic field there is a region where the magnetization is in the same direction. This region is known as magnetic domain.
- In the magnetic domain the atoms always points in the same magnetic filed direction.
- All the atom's magnetic field align in one particular direction.
- This region where atoms align is called as domains.
A and c
Because it defines the boundaries of the system