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Quizzes > Quizzes for Business > Education

Physics Knowledge Assessment Quiz Challenge

Test Your Fundamental Physics Skills Today

Difficulty: Moderate
Questions: 20
Learning OutcomesStudy Material
Colorful paper art depicting elements related to Physics Knowledge Assessment Quiz

Take this Physics Knowledge Assessment Quiz to evaluate your mastery of key physics principles in a fun and challenging way. Whether you're preparing for advanced exams or brushing up on basics, this free quiz lets you explore topics like kinematics, mechanics, and forces. If you enjoyed our Physics Kinematics Quiz or want extra practice with the Physics Mechanics Practice Quiz, you'll love customizing this assessment in our editor. Perfect for students, educators, and self-learners aiming to identify strengths and pinpoint areas for growth. Start now and dive into more quizzes to build solid physics foundations.

What is the SI unit of force?
Joule
Pascal
Watt
Newton
Force is defined in SI units as the amount required to accelerate a one-kilogram mass at one meter per second squared, which is the newton. Other units like joule, watt, and pascal measure energy, power, and pressure respectively.
According to Newton's first law, an object at rest will stay at rest unless acted upon by what?
A net external force
Inertia
Velocity
Friction
Newton's first law states that an object remains at rest or in uniform motion unless a net external force acts on it. Inertia is the property that resists changes, but the law specifies the requirement of a net external force.
What is the formula for calculating average speed?
Time ÷ Distance
Mass à - Distance
Distance ÷ Time
Distance à - Time
Average speed is defined as total distance traveled divided by the total time taken. Multiplying or inverting those quantities does not yield the correct definition.
What force is required to accelerate a 2 kg mass at 4 m/s²?
2 N
6 N
8 N
4 N
According to Newton's second law F=ma, so force equals mass times acceleration: 2 kg à - 4 m/s² = 8 N. The other values do not match that product.
What type of energy is stored in a compressed spring?
Kinetic energy
Thermal energy
Chemical energy
Potential energy
A compressed spring stores energy in its configuration, which is mechanical potential energy. Kinetic energy is due to motion, thermal from heat, and chemical from chemical bonds.
A car travels 100 m in 5 s starting from rest under constant acceleration. What is its acceleration?
4 m/s²
2 m/s²
8 m/s²
10 m/s²
Using s = ½ a t²: 100 = ½ a (5²) = 12.5a, so a = 100/12.5 = 8 m/s². The other values do not satisfy the equation for the given distance and time.
What is the kinetic energy of a 3 kg object moving at 4 m/s?
12 J
32 J
24 J
48 J
Kinetic energy KE = ½ mv² = ½ à - 3 kg à - (4 m/s)² = ½ à - 3 à - 16 = 24 J. The other results are obtained by miscalculating the formula.
In a perfectly elastic collision, which quantity is always conserved?
Momentum
Temperature
Velocity
Speed
In any collision, the total momentum of the system is conserved if no external forces act. Elastic collisions also conserve kinetic energy, but momentum conservation applies to all collision types.
A block slides down a frictionless incline of 30°. What is its acceleration?
9.8 m/s²
5.0 m/s²
4.9 m/s²
2.45 m/s²
On a frictionless incline, the acceleration is g sinθ = 9.8 à - sin30° = 4.9 m/s². The other values do not match the component of gravity along the plane.
How much work is done when a 10 N force moves an object 5 m in the direction of the force?
15 J
50 J
100 J
5 J
Work W = F Ã - d = 10 N Ã - 5 m = 50 J. Other options result from incorrect multiplications or additions.
A spring with constant k = 200 N/m is stretched by 0.1 m. What force does the spring exert?
2 N
0.02 N
200 N
20 N
Hooke's law gives F = kx = 200 N/m à - 0.1 m = 20 N. The other values come from misplacing the decimal or misunderstanding the law.
Doubling the net force on an object while keeping its mass constant results in what change in acceleration?
No change
Double the acceleration
Half as much
A quadratic increase
Newton's second law states a = F/m, so if F is doubled and m is constant, acceleration doubles. It is a direct proportionality.
If an object's velocity doubles, how does its kinetic energy change?
Doubles
Halves
Quadruples
Remains the same
Kinetic energy is given by KE = ½ mv², so doubling v makes KE proportional to (2v)² = 4v², which is four times larger.
Which of Newton's laws states that every action has an equal and opposite reaction?
First law
Second law
Third law
Law of universal gravitation
Newton's third law specifies that for every force exerted by one object on another, there is an equal and opposite force exerted back. The other laws refer to inertia, acceleration, or gravity.
A cyclist applies a 200 N forward force and overcomes a 50 N resistive force on a 50 kg bike. What is the bike's acceleration?
4 m/s²
1 m/s²
3 m/s²
2 m/s²
Net force is 200 N âˆ' 50 N = 150 N. Using a = F/m gives 150 N / 50 kg = 3 m/s². Other options do not match that division.
A mass of 0.50 kg oscillates on a spring with a period of 2.0 s. What is the spring constant k?
9.87 N/m
4.93 N/m
1.97 N/m
0.50 N/m
The period T = 2π√(m/k). Rearranging gives k = m(2π/T)² = 0.50 à - (2π/2.0)² ≈ 4.93 N/m. The other values result from incorrect algebra.
A projectile is launched at 20 m/s at 30° above the horizontal. What maximum height does it reach?
10 m
5.1 m
20 m
2.5 m
Vertical component is 20 à - sin30° = 10 m/s. Maximum height h = v²/(2g) = 10²/(2à - 9.8) ≈ 5.1 m. The other values come from incorrect component or formula use.
A 1000 kg car travels at 20 m/s around a curve of radius 50 m. What centripetal force is required?
4000 N
2000 N
8000 N
16000 N
Centripetal force Fc = m v²/r = 1000 à - (20)² / 50 = 1000 à - 400 / 50 = 8000 N. The other results come from arithmetic errors.
A variable force F(x) = 2x N acts on a particle from x = 0 to x = 3 m. What is the work done?
9 J
6 J
3 J
18 J
Work W = ∫₀³ F(x) dx = ∫₀³ 2x dx = [x²]₀³ = 9 J. Other options result from incorrect integration or forgetting the exponent.
An acceleration vs. net force graph is a straight line through the origin with slope 0.4 (m/s²)/N. What is the mass of the object?
2.5 kg
4.0 kg
1.5 kg
0.4 kg
From a = (1/m) F, the slope is 1/m = 0.4, so m = 1/0.4 = 2.5 kg. The incorrect answers come from miscalculating the reciprocal.
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Learning Outcomes

  1. Analyse core concepts of motion, force, and energy
  2. Calculate values using fundamental physics equations
  3. Identify relationships between physical quantities in experiments
  4. Apply problem-solving techniques to real-world physics scenarios
  5. Demonstrate understanding of Newton's laws of motion
  6. Evaluate experimental results and draw accurate conclusions

Cheat Sheet

  1. Understand Newton's First Law of Motion (Law of Inertia) - Objects love to keep doing what they're already doing: if they're at rest, they stay at rest; if they're moving, they keep moving in a straight line unless something pushes or pulls them. That's why you lurch forward in a car when it suddenly stops - seat belts are there to apply the external force you need! Newton's Laws Review
  2. Master Newton's Second Law of Motion - This law gives us the famous equation F = ma, meaning the bigger the force on an object, the more it accelerates, and the heavier the object, the less it speeds up for the same force. It's like pushing a toy car versus a real car - the lighter toy zooms off faster! Practice calculating different masses and forces to see this principle in action. Equation Overview for Newton's Laws Problems
  3. Grasp Newton's Third Law of Motion - Every action has an equal and opposite reaction: when you push on the ground, the ground pushes you back, which is exactly how rockets blast off into space. It's also why a balloon flies around when the air rushes out the back. Try pushing off a wall on roller skates to feel this law firsthand! Newton's Third Law
  4. Analyze Free-Body Diagrams - Free-body diagrams turn complex force problems into simple sketches by showing all the pushes and pulls on an object with arrows. Drawing them helps you spot which forces cancel out and which cause acceleration. Practice by sketching diagrams for a book sliding down an incline or a skydiver in free fall. Free-Body Diagram Practice
  5. Comprehend the Concept of Friction - Friction fights motion between surfaces and comes in two flavors: static (stops things from starting) and kinetic (slows things down once they're sliding). The frictional force equals μ × the normal force, where μ is the coefficient of friction. Try pushing a block on different surfaces like wood, ice, or carpet to see how μ changes! Friction Equation Guide
  6. Understand the Coefficient of Friction - This dimensionless number, μ, tells you how "grippy" two surfaces are when pressed together. A higher μ means more frictional resistance - think rubber on pavement - while a lower μ is like ice on ice. Calculating μ helps engineers design brakes, shoes, and even zip lines safely! Coefficient of Friction Details
  7. Apply Kinematic Equations - Kinematic equations link displacement, velocity, acceleration, and time so you can predict where and how fast something will be moving. Whether you're calculating how long it takes a ball to hit the ground or how far a car travels, these formulas are your toolkit. Memorize and practice them with fun examples like roller coasters or skateboard ramps! Kinematics Toolkit
  8. Explore the Relationship Between Force, Mass, and Acceleration - It's simple: more force means more acceleration, more mass means less acceleration for the same force. Imagine pushing an empty shopping cart versus a loaded one - the loaded cart needs a bigger push to speed up. Play with virtual physics simulators to see how adjusting mass or force changes motion instantly! Force-Mass-Acceleration Explorer
  9. Study the Law of Universal Gravitation - Every mass pulls on every other mass with a force that's proportional to the product of their masses and inversely proportional to the square of the distance between them. This explains why apples fall and planets orbit the sun. Use interactive planet simulators to watch gravity in action! Universal Gravitation Guide
  10. Practice Problem-Solving Techniques - The best way to master mechanics is by doing lots of problems: identify the knowns and unknowns, draw diagrams, pick the right equations, and solve step by step. Challenge yourself with timed quizzes or group study sessions - teaching a concept is one of the fastest ways to learn! Problem-Solving Workshop
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