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Physics M7-M8

QuestionAnswer
Which of the following is a scalar quantity? Work
What is the formula for calculating work? Work = force × distance
Which of the following terms refers to the ability to do work? Energy
What type of energy is stored in a compressed spring? Elastic potential energy
Which of the following statements is true about the conservation of energy? The total energy of a closed system remains constant.
What is the relationship between power and time? Power is the rate at which work is done
What is the SI unit of work? Joule
Which of the following statements is true about power? It is the rate at which work is done.
What is the definition of mechanical energy? The energy associated with the motion of an object
What is the difference between work and power? Work is the rate at which energy is transferred, while power is the energy transferred over time
Define the term "work" in the context of physics. The energy transferred to or from an object
What is the relationship between work and energy? Energy is a measure of the ability to do work
Which of the following statements accurately describes impulse? Impulse is the change in momentum experienced by an object.
Which of the following statements accurately describes momentum? Momentum is a vector quantity.
What happens to an object's momentum if its mass is doubled? The momentum doubles.
Which of the following is an example of an elastic collision? A ball bouncing off a wall.
How does impulse relate to momentum? Impulse is equal to the change in momentum of an object.
In a collision between two objects, which of the following statements is true? Momentum is always conserved.
Which of the following is an example of an inelastic collision? Two cars colliding and sticking together.
What is the unit of measurement for momentum? kg-m/s
What does it mean for an object to have zero momentum? The object is at rest.
How is momentum defined in physics? Momentum is the product of an object's mass and velocity.
Which of the following statements accurately describes the law of conservation of momentum? The total momentum of a system is always constant.
How does the concept of impulse help explain the effect of airbags in car crashes? Airbags increase the time of impact, reducing the force exerted on the occupants.
Which of the following statements is true about potential energy? It is the energy associated with an object's position or condition.
According to the work-energy theorem, what happens to the kinetic energy of an object when work is done on it? It increases
A machine does 1000 J of work in 5 seconds. What is the power output of the machine? 200
What is the formula for calculating gravitational potential energy? PE = mgh
How does the height of an object affect its potential energy? The higher the object, the higher its potential energy
If the net external force acting on an object is zero, what can be said about its momentum? The momentum is constant.
What is the relationship between force and time in the context of impulse? Force is inversely proportional to time.
How does the law of conservation of energy apply to a closed system? Energy is conserved if there are no external forces acting on the system
What is the SI unit of power? Watt
Created by: jxxnixx
 

 



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