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Katena32 [7]
3 years ago
5

A 2kg object weighs 19.6N on earth. If the acceleration due to gravity on mars is 3.71 meters per second what is the object mass

on earth
Physics
1 answer:
Gre4nikov [31]3 years ago
3 0
The acceleration due to gravity at the Earth's surface is 9.8 m/s/s 

<span>So a 2 kg object will accelerate at 9.8 m/s/s if it is dropped..... actually all dropped objects will accelerate at the same rate. </span>

<span>The force of gravity on the object is given by Newton's 2nd Law </span>

<span>F = m . a </span>

<span>F = 2 . 9.8 = 19.6 N </span>

<span>Now go to Mars , with a lower gravitational field strength. It only accelerates falling objects at 3.71 m/s/s </span>

<span>So the force of gravity on the object is F = 2 . 3.71 = 7.42 N </span>

<span>But the answer is (2) 2 kg, because the mass of the object stays the same and that is what you are asked for. </span>
<span>Someone was trying to be tricky.</span>
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Answer:

A) The speed of the water must be 8.30 m/s.

B) Total kinetic energy created by this maneuver is 70.12 Joules.

Explanation:

A) Mass of squid with water = 6.50 kg

Mass of water in squid cavuty = 1.55 kg

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Velocity by which water was released by squid = v_2

Momentum gained by water but in opposite direction = P'=m_2v_2

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B) Kinetic energy does the squid create by this maneuver:

Kinetic energy of squid = K.E  =\frac{1}{2}m_1v_1^{2}

Kinetic energy of water = K.E' = \frac{1}{2}m_2v_2^{2}

Total kinetic energy created by this maneuver:

K.E+K.E'=\frac{1}{2}m_1v_1^{2}+\frac{1}{2}m_2v_2^{2}

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