WorksheetsSBUR SCI7 QE3 SY2024-25
Total questions: 20
Worksheet time: 10mins
Which of the following statements best describes a scalar quantity?
It has both magnitude and direction.
It is fully described by its magnitude alone.
It can only be measured in standard units.
It requires a reference point for its measurement.
A box is pushed with a force of 10 N to the east and then pulled with a force of 5 N to the west. What is the net force acting on the box?
5 N to the east
5 N to the west
15 N to the east
15 N to the west
Which of the following is an example of a non-contact force?
Friction
Tension
Gravitational force
Applied force
If two forces of 10 N and 15 N act on an object in the same direction, what is the resulting net force?
5 N
10 N
15 N
25 N
An object is at rest and experiences balanced forces. What can be inferred about its state of motion?
It will start moving in the direction of the larger force.
It will remain at rest.
It will accelerate in the direction of the net force.
It will move with constant velocity.
A person walks 4 m east, then 3 m west. What is their total distance traveled?
1 m east
7 m
3 m west
4 m east
If a car travels 100 km north in 2 hours, what is its average velocity?
50 km/h north
100 km/h north
200 km/h north
50 km/h
Which of the following correctly distinguishes between speed and velocity?
Speed is a vector; velocity is a scalar.
Speed includes direction; velocity does not.
Speed is the rate of distance; velocity is the rate of displacement.
Speed can change direction while velocity cannot.
An object is dropped from a height and falls under the influence of gravity. What type of energy is primarily involved just before it hits the ground?
Potential energy
Kinetic energy
Thermal energy
Chemical energy
According to the Law of Conservation of Energy, what happens to energy in a closed system?
It can be created or destroyed.
It can only be transformed from one form to another.
It remains constant only if no work is done.
It decreases over time.
Which of the following correctly describes conduction?
Transfer of heat through fluid movement.
Transfer of heat through electromagnetic waves.
Transfer of heat through direct contact.
Transfer of heat that requires a medium.
What is the primary difference between a conductor and an insulator?
Conductors can store energy; insulators cannot.
Conductors allow heat transfer; insulators resist it.
Conductors are always metals; insulators are always non-metals.
Conductors can only transfer heat; insulators can transfer heat and electricity.
If a car accelerates from rest to a speed of 20 m/s in 5 seconds, what is its average acceleration?
4 m/s²
5 m/s²
20 m/s²
1 m/s²
A person applies a force of 30 N to push a box, but the box does not move due to friction. What can be concluded about the frictional force acting on the box?
It is less than 30 N.
It is equal to 30 N.
It is greater than 30 N.
It is irrelevant to the situation.
When a hot object is placed in a cooler environment, which mechanism of heat transfer occurs?
Conduction only
Convection only
Radiation only
All of the above
If an object has a mass of 2 kg and is moving at a velocity of 3 m/s, what is its kinetic energy?
3 J
6 J
9 J
12 J
Which of the following best describes displacement?
The total distance traveled regardless of direction.
The straight-line distance from the initial to final position, including direction.
The average speed of an object over time.
The distance covered by an object in one direction only.
An object is moving with a constant speed in a circular path. What can be said about its velocity?
It is constant.
It is changing due to the change in direction.
It is zero.
It is equal to the speed of the object.
If a material is classified as an insulator, what is its primary characteristic?
It allows electrical current to pass through easily.
It resists the flow of heat.
It can conduct heat and electricity.
It has a high density.
In a scenario where two objects collide and stick together, what principle is being demonstrated?
Conservation of momentum
Conservation of energy
Newton's first law
Newton's third law
