Answer:
Rh = 97.67 m
Explanation:
given data
mass = 2400 kg
lands = 293 mm
solution
as here boulder is thrown upward so at some point will be hightest so at that velocity will be zero
so we apply here conservation of momentum
0 = m1 × v1 - mh × vh ...............1
m1 × v1 = mh × vh
× 2400 × v1 = × 2400 × vh
v1 = 3 vh
and
R = speed × time
time =
and
Rh = vh × time
Rh = v1 ×
Rh = 97.67 m
Answer:
the apparent weight of the astronaut is 81.032 N { towards moon }
Explanation:
Given that;
Mass of astronaut m = 80 kg
Distance of spaceship from the Earth's moon r = 2200 km = 2200 × 10³ m
Acceleration due to gravity of the moon = GM/r²
where M is mass of the moon( 7.34767309 × 10²² kg )
gravitational constant G = 6.67 × 10⁻¹¹
So,
Acceleration due to gravity of the moon g is;
g = [ (6.67 × 10⁻¹¹) × (7.35 × 10²²) ] / (2200 × 10³)²
g = 4.90245 × 10¹² / 4.84 × 10¹²
g = 1.0129 m/s²
now, we take the positive direction towards the moon if the spacecraft is moving with constant velocity, a = 0
The apparent weight is measured by the normal force FN
so,
∑F = ma
-FN + mg = ma
-FN + mg = 0
FN = mg
we substitute
FN = 80 × 1.0129
FN = 81.032 N { towards moon }
Therefore, the apparent weight of the astronaut is 81.032 N { towards moon }
Answer:
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Explanation:
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Answer:
the detection of the equivalence point, the point at which chemically equivalent amounts of the reactants have been mixed.
Answer:
23 km/h
Explanation:
Let's take the direction "towards Lilah" as positive direction.
Then, we can write Felipe's velocity with respect to Lilah as
At the same time, Felipe throws the football forwards, towards Lilah. The velocity of the ball with respect to Felipe (and the skateboard) is
Since both Felipe and the ball are moving in the same direction, then the velocity of the ball with respect to Lilah can be calculated by adding the two velocities: