Students calculate speed, velocity and acceleration with correct SI units, convert between km/h and m/s, and use F = ma to find force, mass or acceleration, including problems with friction and weight. They then apply Newton's three laws of motion to everyday situations such as braking, seatbelts, swimming and walking.
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Curriculum: New Zealand Curriculum. We show specific outcome codes only where they have been verified against the official curriculum document.
Completed: Speed, Velocity, Acceleration and Newton's Laws
Year 11 students (typically ages 15–16) working on forces & motion. It is pitched at level 3 · challenge.
Yes. The PDF includes a full answer sheet with model answers and success criteria where there is more than one good answer. You can also view the answers online.
About 45 minutes for 22 questions. Short, regular sessions work best: two or three a week beats one long one.
No. Click Download Free PDF and it opens immediately. It is free for personal, classroom and homeschool use.
Try Distance–Time and Velocity–Time Graphs.
Success TutoringWorksheetsYear 11 · Science · Forces & MotionName
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Always write the formula, substitute with units, and give your answer with the correct unit: m/s, m/s2, N or kg.
Show the formula, your working and the units in every answer.
Speed is how fast an object moves: speed = distance ÷ time. The SI unit is metres per second (m/s); kilometres per hour (km/h) is also common.
Velocity is speed in a given direction, such as 20 m/s north. Two objects can have the same speed but different velocities.
Acceleration is the rate of change of velocity: a = (v − u) ÷ t, where u is the starting velocity, v is the final velocity and t is the time taken. The unit is metres per second squared (m/s2). A negative acceleration means the object is slowing down (decelerating).
Use a = (v − u) ÷ t. Show your working and units.
Show the formula, your working and the units.
Newton's second law: the acceleration of an object depends on the net (unbalanced) force on it and on its mass: F = ma. Force is in newtons (N), mass in kilograms (kg) and acceleration in m/s2. One newton is the force that gives a 1 kg mass an acceleration of 1 m/s2 (1 N = 1 kg·m/s2).
Rearranged: a = F ÷ m and m = F ÷ a. If several forces act, first find the net force (forces in opposite directions are subtracted).
Weight is the force of gravity on a mass: W = mg. On Earth, g ≈ 9.8 N/kg. Mass is measured in kilograms and stays the same everywhere; weight is a force, measured in newtons.
Preview — the PDF contains the full resource and answer sheet.
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