What determines an object's kinetic energy?
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Mass and speed
Weight and speed
Mass and position
Weight and position
Mass and speed
Potential Energy is the energy of:
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motion
mass
speed
position
position
. The kinetic and potential energies of an object both always depend on which property?
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mass of the object
volume of the object
relative position of the object
gravitational force of the object
mass of the object
At what point does a roller coaster have the most kinetic energy?
A roller coaster has the most kinetic energy at the point where it is moving at its highest speed.
At what point does a kid have the most potential energy on a swing?
A kid has the most potential energy on a swing at the highest point of the swing's arc, when they are furthest from the ground.
he data below was recorded during an investigation of the relationship between potential energy and the mass and height of an object.
Height Data
When a 2 kg weight was lifted 3 meters above the floor, it had 58.8 Joules of potential energy.When a 2 kg weight was lifted 6 meters above the floor, its potential energy doubled.
Mass Data
When a 3 kg weight was lifted 2 meters above the floor, it had 58.8 Joules of potential energy. When a 6 kg weight was lifted 2 meters above the floor, its potential energy doubled.
BEST represents the relationship between potential energy and the mass and height of an object.
Based on the given data, the best relationship between potential energy and the mass and height of an object can be represented by the equation:
Potential Energy = m × g × h
Where:
m = mass of the object
g = acceleration due to gravity (approximately 9.8 m/s²)
h = height of the object
This equation states that the potential energy of an object is directly proportional to both its mass and the height from which it is lifted.
What causes a change in an object's motion?
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balanced force
unbalanced force
acceleration
inertia
An unbalanced force causes a change in an object's motion.
A, B, C or D?
B, unbalanced force.
What will happen to an object in motion if an unbalanced force does not act on it?
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it will slow down eventually
it will stop
it will keep moving at the same velocity forever
its speed or direction will change
If an unbalanced force does not act on an object in motion, it will keep moving at the same velocity forever.
A, B, C, or D?
C, it will keep moving at the same velocity forever.
Inertia is a force.
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True
False
False
When a ball is thrown up into the air, what two forces are at work?
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Gravity
Air Resistance
Friction
Inertia
When a ball is thrown up into the air, the two forces at work are gravity and air resistance.
Which object will have more acceleration if he uses the same amount of force on each object?
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Captionless Image
10 kg box
two 10 kg boxes
both will have the same acceleration