Free Grade 9 Physics Worksheets with Answers

Grade 9 Speed & Motion Calculations

HS-PS2-1

Calculating speed, distance and time with speed = distance ÷ time.

e.g. A cyclist rides at 15 m/s for 7 seconds. How far does she travel?

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Grade 9 Kinematics: Speed, Velocity & Acceleration

HS-PS2-1

Calculating average speed, acceleration and distance for accelerating objects.

e.g. A car speeds up from 9 m/s to 21 m/s in 4 s. What is its acceleration?

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Grade 9 Forces & Newton's Laws

HS-PS2-1

Forces such as gravity and friction, and Newton's three laws of motion.

e.g. What is Newton's First Law about?

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Grade 9 Forces & Motion (Mixed)

A mixed set on speed calculations, forces and Newton's laws of motion.

e.g. What is Newton's Third Law about?

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Grade 9 Newton's Second Law (F = ma)

HS-PS2-1

Using F = ma to find force, mass or acceleration, including net force.

e.g. A net force of 14 N gives an object an acceleration of 2 m/s². What is its mass?

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Grade 9 Kinetic & Potential Energy

HS-PS3-1

Calculating kinetic energy (½mv²) and gravitational potential energy (mgh).

e.g. A roller coaster is at the very top of a hill. Is its potential energy at a maximum or minimum?

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Grade 9 Work & Power

HS-PS3-1

Calculating work (W = Fd) and power (P = W/t).

e.g. 42 J of work is done with a force of 7 N. How far did the object move?

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Grade 9 Wave Speed, Frequency & Wavelength

HS-PS4-1

Using v = f × λ to find wave speed, frequency and wavelength.

e.g. A wave travels at 172 m/s with a wavelength of 4 m. What is its frequency?

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Grade 9 Electromagnetic Spectrum

HS-PS4-4

The types of electromagnetic waves, their uses and dangers, from radio to gamma rays.

e.g. Which waves do we feel as heat?

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Grade 9 Electricity & Circuits

Circuits, conductors and insulators, series and parallel circuits, units of current and voltage, and Ohm's law for older grades.

e.g. What is a circuit with more than one path for the current called?

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Grade 9 Electric Circuits

HS-PS3-3

Ohm's law, series and parallel resistance, and electric power.

e.g. 17 V drives a current of 1 A. What is the resistance?

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Grade 9 Momentum & Collisions

AdvancedHS-PS2-2

Calculating momentum and using conservation of momentum in collisions.

e.g. A 1 kg object has a momentum of 6 kg·m/s. How fast is it moving?

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Grade 9 Specific Heat (Q = mcΔT)

AdvancedHS-PS3-4

Calculating heat energy with Q = mcΔT.

e.g. 3159 J of heat is added to 90 g of aluminum (c = 0.9 J/g·°C). By how much does its temperature rise?

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Grade 9 Challenge: Think Like a Scientist

Challenge

Surprising questions and thought experiments that test real scientific reasoning.

e.g. Why does your breath make fog on a cold window?

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