PHYSICAL SCIENCE EXAM QUESTION. SAMPLE EXAM
REVISION PRACTICE QUESTIONS WITH CORRECT
ANSWERS (2024 UPDATE)
Which of the following statements about work and energy is not true? - ANSWER- work and
energy are always equal
Gravitational potential energy depends on the - ANSWER- the mass of the object, the height
of the object, the acceleration due to gravity
Which of the following is an example of mechanical energy? - ANSWER- potential energy
The primary source of the sun's energy is - ANSWER- nuclear fusion
The kind of energy associated with atomic bonds is - ANSWER- chemical energy
A machine is a device that - ANSWER- can mulitply and change the direction of an input force
What is the mechanical advantage of a single fixed pulley - ANSWER- 1
An inclined plane - ANSWER- changes both the magnitude and the direction of the force
Which of the following is a compound machine? - ANSWER- a pair of pliers
Which of the following statements is not true? - ANSWER- if the kinectic energy of an object
decreases, the nonmechanical will decrease
The graviatational force between two objects depends on masses of objects and - ANSWER-
distance between objects
, Which of the following objects exerts a gravitational force? - ANSWER- bowling ball, book,
feather
Increasing which of these conditions results in more gravitational force between two objects? -
ANSWER- mass
When an object is in free fall, the only force acting on it is - ANSWER- gravity
Free-fall acceleration near Earth's surface - ANSWER- is the same for all objects
Orbital motion is a combination of - ANSWER- forward motion and free fall
Which statement about weight is incorrect? - ANSWER- an object weighs more on the moon
than it weighs on earth
Astronauts float when inside an orbiting spaceship because they are - ANSWER- outside earth
gravity
Which is an example of projectile motion? - ANSWER- a dart thrown at a dart board
If you divide momemtum by velocity, the results is the value of the object's - ANSWER- mass
A 10,0 kg dog chasing a rabbit north at 6.0 m/s has a momemtum of - ANSWER- 60.0 m/s
north
When the velocity of an object changes, it is acted up by a - ANSWER- force
If the net force of an object is zero then the object has - ANSWER- unbalanced forces
REVISION PRACTICE QUESTIONS WITH CORRECT
ANSWERS (2024 UPDATE)
Which of the following statements about work and energy is not true? - ANSWER- work and
energy are always equal
Gravitational potential energy depends on the - ANSWER- the mass of the object, the height
of the object, the acceleration due to gravity
Which of the following is an example of mechanical energy? - ANSWER- potential energy
The primary source of the sun's energy is - ANSWER- nuclear fusion
The kind of energy associated with atomic bonds is - ANSWER- chemical energy
A machine is a device that - ANSWER- can mulitply and change the direction of an input force
What is the mechanical advantage of a single fixed pulley - ANSWER- 1
An inclined plane - ANSWER- changes both the magnitude and the direction of the force
Which of the following is a compound machine? - ANSWER- a pair of pliers
Which of the following statements is not true? - ANSWER- if the kinectic energy of an object
decreases, the nonmechanical will decrease
The graviatational force between two objects depends on masses of objects and - ANSWER-
distance between objects
, Which of the following objects exerts a gravitational force? - ANSWER- bowling ball, book,
feather
Increasing which of these conditions results in more gravitational force between two objects? -
ANSWER- mass
When an object is in free fall, the only force acting on it is - ANSWER- gravity
Free-fall acceleration near Earth's surface - ANSWER- is the same for all objects
Orbital motion is a combination of - ANSWER- forward motion and free fall
Which statement about weight is incorrect? - ANSWER- an object weighs more on the moon
than it weighs on earth
Astronauts float when inside an orbiting spaceship because they are - ANSWER- outside earth
gravity
Which is an example of projectile motion? - ANSWER- a dart thrown at a dart board
If you divide momemtum by velocity, the results is the value of the object's - ANSWER- mass
A 10,0 kg dog chasing a rabbit north at 6.0 m/s has a momemtum of - ANSWER- 60.0 m/s
north
When the velocity of an object changes, it is acted up by a - ANSWER- force
If the net force of an object is zero then the object has - ANSWER- unbalanced forces
