levo

Linear and Angular Motion

Vectors: displacement, velocity, acceleration and momentum

  • 3 things to know
  • Paper 2

Overview

Vector quantities, displacement, velocity and acceleration with worked examples, momentum in rugby, and velocity–time graphs.

What you need to know

Answer each one before you reveal it.

Your recallNot started
Key term

What is a vector quantity?

Key term

What is displacement?

Key term

A cross-country runner follows a winding 3 km course that finishes 1 km due east of the start. State the distance travelled and the displacement.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is a vector quantity?

    Model answer

    A vector quantity has both magnitude and direction. Vectors are often shown as arrows, with the length representing magnitude.

  2. 2

    What is displacement?

    Model answer

    Displacement is the shortest straight-line distance from start to finish, in a stated direction. Displacement is measured in metres.

  3. 3

    A cross-country runner follows a winding 3 km course that finishes 1 km due east of the start. State the distance travelled and the displacement.

    Model answer

    The distance travelled is 3 km. The displacement is 1 km east.

  4. 4

    What is velocity, and how is it calculated?

    Model answer

    Velocity is the rate of change of displacement. Velocity = displacement ÷ time, measured in metres per second (m s⁻¹).

  5. 5

    How do speed and velocity differ?

    Model answer

    Speed is a scalar with magnitude only. Velocity is a vector that also states the direction of motion.

  6. 6

    A swimmer completes a 100 m race in a 50 m pool in 50 s, finishing at the starting wall. State the average speed and the average velocity.

    Model answer

    The average speed is 2.0 m s⁻¹. The average velocity is zero, because the displacement is zero.

Other ways to work this

The same content, four other ways.

What is inside Levo

Six ways to work the same material.

1Closed book
2Open book
3Closed book

The 3-step method, run for you

Answer cold, learn it, then prove it stuck. Levo tracks the jump between your first attempt and your last.

The Cardiovascular System
The Respiratory System
The Neuromuscular System
The Musculo-Skeletal System and Movement Analysis

Cram a whole paper in one sitting

Sort every topic into what you know and what you do not, then drill only the weak ones.

The democratic leader is .
person-orientedtask-orientedautocratic

Blank Blitz makes facts automatic

Rapid timed gap-fills on the terms and numbers you need to recall without thinking.

ADrug testing protects athletes' health.
BDrug testing keeps competition fair.
CDrug testing deters cheating.

Build It gets the exam shape right

Assemble a full-mark answer from its marking points, in the order an examiner wants them.

Scalar means a quantity described by size alone.
TrueFalse

Test It catches misconceptions

Spot the fault in a statement. The traps are the mistakes students actually make.

721941163128510

Brain Breaks between sessions

Short focus games to reset attention, so the next set lands better than the last.

Every question in Linear and Angular Motion, on a schedule.

Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.

Or £46 a year, about £3.83 a month. Cancel anytime.