Answer:
5N westward, acting on the student
Explanation:
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
Answer:
The distance is 300 m.
Explanation:
Given that,
Time = 30 s
Speed = 80 m/s
Distance = 1200 m
Speed of smaller plane = 40 m/s
We need to calculate the acceleration
Using equation of motion

Put the value in the equation



We need to calculate the distance
Using equation of motion

Put the value in the equation



Hence, The distance is 300 m.
Answer:
X: period
Y: tangential speed
Explanation:
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Answer:
Seismic waves are mechanical waves because they travel through the medium of the Earth.
Explanation: