Three chairs were rolling across a flat office floor. The blue and red chairs are the same mass, and they have more mass than th
e yellow chair. Each chair was hit by another chair, but not from the same direction. Use the information in the diagram to answer.
Which chair(s) experienced the strongest force when hit? How do you know?
a
The blue and red chairs experienced the strongest force because they are both more massive than the yellow chair and they changed speed by the same amount.
b
The red chair experienced the strongest force because it is as massive as the blue chair and has the highest ending speed.
c
All three chairs experienced the same force because they changed speed by the same amount.
d
The blue chair experienced the strongest force because it takes more force to slow an object than it takes to make it go faster.
Which chair(s) experienced the strongest force when hit? How do you know?
a
The blue and red chairs experienced the strongest force because they are both more massive than the yellow chair and they changed speed by the same amount.
b
The red chair experienced the strongest force because it is as massive as the blue chair and has the highest ending speed.
c
All three chairs experienced the same force because they changed speed by the same amount.
d
The blue chair experienced the strongest force because it takes more force to slow an object than it takes to make it go faster.
2 answers:
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Explanation:
Let the mass of two objects be m. Both objects move along the same line in opposite directions. Let v and u₂ are speeds of both objects before collision.
After the collision, both objects stick together and move with the speed of 0.1 V the direction of the velocity of the first mass before the collision.
Using the conservation of momentum as :
On solving above equation,
So, the speed of the second mass before the collision is 0.8 v. The negative sign shows that the it moves in opposite direction. Hence, this is the required solution.
Answer:
Final volume, V2 = 24.62 L
Explanation:
Given the following data;
Initial volume = 40 L
Initial pressure = 80 Pa
Final pressure = 130 Pa
To find the final volume V2, we would use Boyles' law.
Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas.
Mathematically, Boyles law is given by;
Substituting into the equation, we have;
Final volume, V2 = 24.62 Liters