The final speed when the mass is 40,000kg height is 2.5km and 500,000N of force is 176.8 m / s
According to Newton's second law of motion,
F = m a
F = Force
m = Mass
a = Acceleration
m = 40000 kg
F = 500000 N
a = F / m
a = 500000 / 40000
a = 12.5 m / s²
a = v / t
v = d / t
v = Velocity
t = Time
d = Distance
d = 2.5 km = 2500 m
a = d / t²
12.5 = 2500 / t²
t² = 200
t = 14.14 s
v = 2500 / 14.14
v = 176.8 m / s
Therefore, the final speed is 176.8 m / s
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Answer:
It will have the same KE ( 450 J ) just before it hits the ground. The GPE transferred to KE is the same in both cases and the original KE is the same in both cases so the total will be the same.
The one thrown sideways will take longer to get to the ground but it will have the same velocity ( and therefore KE ) as the thrown down stone.
Explanation:
I encountered this same question, these were the choices given.
1). In the atom, the particles of the cathode rays are embedded in a diffuse cloud of positive charge.
<span>2).Cathode rays have mass. </span>
<span>3).Matter contains positive and negative charge. </span>
<span>4).The positive component of matter is also particulate in nature. </span>
<span>5).Particles of the cathode rays are fundamental to all matter. </span>
<span>6).An atom is divisible. </span>
<span>7).Particles of the cathode rays are negatively charge.
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There are more than one correct statement. These statements are:
<span>2).Cathode rays have mass.
</span><span>3).Matter contains positive and negative charge.
</span>5).Particles of the cathode rays are fundamental to all matter. 6).An atom is divisible.
