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WorksheetsPhysics Final Exam Grade 9
Total questions: 48
Worksheet time: 34mins
Kinetic friction is always less than static friction.
True
False
Mechanical energy of a system is the sum of its kinetic and potential energy.
True
False
Frictional force always acts in the direction of motion.
True
False
The area under the curve of a velocity-time graph represents displacement.
True
False
In uniform motion, the velocity of an object remains constant.
True
False
The property of an object to resist changes in its state of motion.
Newton’s 1st law
Newton’s 2nd law
Newton’s 3rd law
Inertia
For every action, there is an equal and opposite reaction.
Newton’s 1st law
Newton’s 2nd law
Newton’s 3rd law
Inertia
A push or pull acting on an object that can cause it to accelerate.
Newton’s 1st law
Newton’s 2nd law
Newton’s 3rd law
Force
An object remains at rest or in uniform motion unless acted upon by a net external force.
Newton’s 1st law
Newton’s 2nd law
Newton’s 3rd law
Inertia
The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
Newton’s 1st law
Newton’s 2nd law
Newton’s 3rd law
Mass
Which of the following statements correctly describes the difference between displacement and distance?
Distance is a vector quantity, while displacement is a scalar quantity.
Displacement can never be greater than distance.
Distance measures the total path covered, while displacement measures the shortest straight line between two points.
Distance is always equal to displacement.
A car's velocity changes from 20 m/s to 50 m/s in 5 seconds. What is the car’s average acceleration?
4 m/s²
5 m/s²
6 m/s²
8 m/s²
Which one of the following is true about the definition of acceleration?
Acceleration is the rate at which distance changes over time.
Acceleration is the rate at which velocity changes with respect to time.
Acceleration is the rate at which an object’s position changes with time.
Acceleration is the total displacement divided by the total time.
Which of the following statements correctly describes average speed?
Average speed is the total distance traveled divided by the total time taken.
Average speed is the rate at which an object changes its position.
Average speed is the rate at which velocity changes with respect to time.
Average speed is the distance traveled in one second.
A car moves a straight path for 144 km in 2 hours. What is the average speed of the car in meters per second?
20 m/s
12 m/s
72 m/s
144 m/s
In a velocity - time graph, the slope of the graph represents:
Acceleration
Displacement
Speed
Velocity
Which of the following statements is correct about the difference between average velocity and instantaneous velocity?
Average velocity is the rate of change of displacement over time, while instantaneous velocity is the rate of change of distance over time.
Average velocity is the rate of change of position over time, while instantaneous velocity is the velocity at a specific moment in time.
Average velocity can never be zero, while instantaneous velocity can be zero.
Average velocity is the rate of change of velocity over time, while instantaneous velocity is the rate of change of acceleration over time.
A bus travels a distance of 60 km east in 2 hours, and then 30 km east in 1 hour. What is the average speed and average velocity of the bus for the entire trip, respectively?
Average speed: 30 km/h, Average velocity: 30 km/h east
Average speed: 40 km/h, Average velocity: 30 km/h east
Average speed: 45 km/h, Average velocity: 30 km/h east
Average speed: 45 km/h, Average velocity: 60 km/h east
A car moves along a straight path, and its velocity-time graph forms a rectangle with a velocity of 10 m/s for a time interval from 0 to 4 seconds. What is the displacement traveled by the car during this time interval?
20 meters
40 meters
50 meters
60 meters
Which one of the following statements is false about the definition of uniform motion?
Uniform motion occurs when an object covers equal distances in equal intervals of time.
Uniform motion means the object travels at a constant speed.
Uniform motion involves a change in velocity over time.
In uniform motion, the object does not accelerate.
A car accelerates uniformly at 4 m/s² and reaches a final velocity of 45 m/s in 5 seconds. What is the initial velocity of the car?
0 m/s
20 m/s
25 m/s
30 m/s
Which of the following sets contains only contact forces?
Gravitational force, Normal force, Frictional force
Frictional force, Tension force, Normal force
Electrostatic force, Tension force, Magnetic force
Magnetic force, Gravitational force, Frictional force
Which of the following is an example of action and reaction forces as described by Newton’s Third Law?
A car’s tires push on the road and the road pushes back on the tires.
A person pushes a shopping cart and causes it to move.
An apple falls to the ground due to gravity.
A satellite orbits Earth because of gravitational attraction.
If an object has a mass of 56 kg on the Earth surface, then calculate the weight of an object? {g = 10 m/s²}
56 N
560 N
50 N
600 N
How does gravity affect objects on Earth?
It keeps objects stationary at all times.
It pulls objects toward the Earth's center.
It only affects objects when they are in motion.
It pushes objects away from the Earth's surface.
If the net force acting on an object is tripled while its mass remains constant, what happens to i
If the net force acting on an object is tripled while its mass remains constant, what happens to its acceleration?
It becomes one-third.
It remains the same.
It triples.
It doubles.
A 400 kg object experiences an acceleration of 8 m/s². What is the net force acting on it?
50 N
400 N
320 N
3200 N
If a force of 800 N is applied to move an object 50 meters in the direction of the force, how much work is done in kilojoules?
4 kJ
40 kJ
400 kJ
800 kJ
How does the roughness of a surface typically affect the friction between two objects?
Friction increases as the surface becomes smoother.
Friction increases as the surface becomes rougher.
The roughness of a surface has no effect on friction.
Friction becomes constant regardless of surface roughness.
Which of the following is the main factor that determines the amount of friction?
The mass of the object
The roughness of the surfaces in contact
The speed of the moving object
The area of contact between the surfaces
Which one of the following is a disadvantage of friction?
It allows us to walk without slipping.
It helps vehicles to stop when brakes are applied.
It causes wear and tear of machine parts.
It enables the writing on paper.
Which of the following statement is the correct scientific definition of work?
The force applied to an object.
The displacement of an object due to applied force.
The product of force and displacement in the direction of the force.
The effort required to move an object.
Which of the following statements is false about kinetic energy of an object?
Kinetic energy depends on the mass and velocity of an object.
Kinetic energy is directly proportional to the square of the object's velocity.
Kinetic energy increases as the mass of the object increases, assuming velocity remains constant.
Kinetic energy is independent the velocity of an object's.
For a fixed mass, if the speed of the ball is tripled, what will happen to its kinetic energy?
It will increase by a factor of 3.
It will increase by a factor of 6.
It will increase by a factor of 9.
It will decrease by a factor of 9
Which of the following statement is the correct definition of potential energy?
The energy stored in an object due to its position
The energy an object has due to its motion.
The energy required to move an object at a constant speed.
The energy an object has due to its velocity.
Which of the following statements is wrong about Newton's Third Law of Motion?
For every action, there is an equal and opposite reaction.
The action and reaction forces act on the same object.
Action and reaction forces always act in pairs.
Action and reaction forces act on different objects.
Which of the following statements is false about Newton’s Second Law of Motion, which describes the relationship between net force, mass, and acceleration?
The acceleration of an object is directly proportional to the net force acting on it.
The acceleration of an object is inversely proportional to its mass.
The net force acting on an object is the product of its mass and acceleration.
The acceleration of an object increases with increasing mass for a given force
Which of the following statements is false about the definition of static friction?
Static friction can vary in magnitude, depending on the applied force.
Static friction has a maximum limit beyond which the object will start moving.
Static friction is always present when an object is in motion.
Static friction prevents an object from starting to slide or move.
Which of the following situations represents work is said to be negative?
The force is perpendicular to the displacement.
The force and displacement are in the same direction.
The force and displacement are in opposite directions.
No force is applied to the object.
If 400 g mass of ball is thrown upward with speed of 5m/s, then what is kinetic energy of the ball?
5 J
1J
0.5
10 J
Which of the following statements is wrong about the definition of power?
Power is the rate at which work is done or energy is transferred.
Power is measured in watts (W), where 1 watt equals 1 joule per second.
Power depends on both the amount of work done and the time taken to do it.
Power is the same regardless of how long it takes to do the work.
Which of the following statements is correct about mechanical energy?
Mechanical energy is the sum of kinetic and potential energy in a system.
Mechanical energy is the energy possessed by an object due to its temperature.
Mechanical energy is conserved only in the presence of external forces.
Mechanical energy is not affected by the object's motion or position.
If a bird with a mass of 100 g is flying in space and has 80 J of kinetic energy, what is the speed of the bird?
A 30 kg rock is held at a height of 8 m above the ground. Find the gravitational potential energy of the rock relative to the ground? {take g = 10 m/s²}
If an electric pump does 7200 J of work in 60 seconds, what is the power output of the pump?
What is the unit of measurement for force in the International System of Units (SI)?
Newton (N)
Pascal (Pa)
Watt (W)
Joule (J)
Which of the following statements is true regarding the conservation of energy?
Energy can be created and destroyed.
Energy cannot be transferred between systems.
Energy can only be transformed from one form to another.
Energy is always lost in any transformation.
