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givi [52]
3 years ago
7

A solid ball is rolling along a horizontal surface at 3.7 m/s when it encounters an upward

Physics
1 answer:
lys-0071 [83]3 years ago
4 0

Answer:

h = 0.697 [m]  

Explanation:

To solve this problem we must use the energy conservation theorem, where it tells us that kinetic energy is converted to potential energy or vice versa.

E_{kinet}=E_{pot}

where:

Ekinet = kinetic energy [J]

Epot = potential energy [J]

\frac{1}{2}*m*v^{2}=m*g*h\\0.5*(3.7)^{2} =9.81*h\\h =(6.845)/9.81\\h = 0.697 [m]

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visible and ultraviolet

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While watching a planet orbiting a star, you notice that the doppler shift in the light of the star is becoming increasingly blu
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A potato is launched from the ground at an 73 degree angle with a velocity of 48 m/s.
Wittaler [7]

Answer:

107.4 meters

Explanation:

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2 years ago
What happens to electron flow with a conductor of the voltage source is removed?
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3 years ago
Sawyer launches his 180 kg raft on the Mississippi River by pushing on it with a force of 75N. How long must Sawyer push on the
Daniel [21]

Answer: 4.8 s

Explanation:

We have the following data:

m=180 kg the mass of the raft

F=75 N the force applied by Sawyer

V=2 m/s the raft's final speed

V_{o}=0 m/s the raft's initial speed (assuming it starts from rest)

We have to find the time t

Well, according to Newton's second law of motion we have:

F=m.a (1)

Where a is the acceleration, which can be expressed as:

a=\frac{\Delta V}{\Delta t}=\frac{V-V_{o}}{t-t_{o}} (2)

Substituting (2) in (1):

F=m\frac{V-V_{o}}{t-t_{o}} (3)

Where t_{o}=0

Isolating t from (3):

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t=\frac{180 kg(2 m/s-0 m/s)}{75 N}

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t=4.8 s

6 0
3 years ago
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