Answer:
0.8m/s
Explanation:
Weight of mas,F=763 N
Mass of man=
By using
Weight of flatcar=F'=3513 N
Mass of flatcar=
Total mass of the system=Mass of man+mass of flatcar=77.86+358.5=436.36 kg
Velocity of system=19.8m/s
Let v be the velocity of flatcar with respect to ground
Velocity of man relative to the flatcar=
Final velocity of man with respect to ground=v-4.68
By using law of conservation of momentum
Initial momentum=Momentum of car+momentum of flatcar
Initial speed of flatcar=Speed of system
Increase in speed=Final speed-initial speed=20.6-19.8=0.8m/s
Yes, C is the correct answer.
Explanation:
They are,
1.Moving the load closer to the fulcrum will increase the mechanical advantage.
2.Moving the effort farther from the fulcrum will increase the mechanical advantage. This may require a longer lever.
'Voltage' is not a quantity that goes 'through' anything. It's the difference of electrical potential between two points, so we usually talk about the voltage 'across' a resistor, or between its ends.
The electrical 'current' through a resistor is directly proportional to the voltage between its ends. So, if the voltage across the resistor is increased by some factor, the current through it increases by the same factor.
Answer:
<h3>The answer is 3000 N</h3>
Explanation:
The force acting on an object given the mass and acceleration we use the formula
<h3>force = mass × acceleration</h3>
From the question
mass = 1000 kg
acceleration = 3 m/s²
So we have
force = 1000 × 3
We have the final answer as
<h3>3000 N</h3>
Hope this helps you