Answer:
The wood block reaches a height of 4.249 meters above its starting point.
Explanation:
The block represents a non-conservative system, since friction between wood block and the ramp is dissipating energy. The final height that block can reach is determined by Principle of Energy Conservation and Work-Energy Theorem. Let suppose that initial height has a value of zero and please notice that maximum height reached by the block is when its speed is zero.
(1)
Where:
- Maximum height of the wood block, in meters.
- Initial speed of the block, in meters per second.
- Kinetic coefficient of friction, no unit.
- Gravitational acceleration, in meters per square second.
- Mass, in kilograms.
- Distance travelled by the wood block along the wooden ramp, in meters.
- Inclination of the wooden ramp, in sexagesimal degrees.
If we know that , and , then the height reached by the block above its starting point is:
The wood block reaches a height of 4.249 meters above its starting point.
Bruh just multiply 9.5 by 140 because if he runs for 140 seconds and runs 9.5 meters per second then he runs 9 meters per second
Answer:
The distance moved by the boat is 0.70 m.
Explanation:
Given that,
Mass of Romeo = 77.0 kg
Mass of Juliet = 55.0 kg
Distance = 2.70 m
Mass of boat = 80.0 kg
Let the distance moved by the boat is x.
as the center of mass will not change it's position
We need to calculate the distance moved by the boat
Using formula for distance
Put the value into the formula
Hence, The distance moved by the boat is 0.70 m.
It would have to be a solid so the answer would be A.