Motion Flashcards
What is Distance usually measured in?
Meters (m)
What is Time usually measured in?
Seconds (s)
What is the formula for speed?
Speed (v) = Distance (d) divided by Time (t)
What is the formula for the gradient of a distance-time graph?
Gradient = Change in Distance (d) divided by Change in Time (t)
What is the formula for the gradient of a speed-time graph?
Gradient = Change in Speed (v) divided by Change in Time (t)
What is speed?
Speed, being a scalar quantity, is the rate at which an object covers distance.
What is velocity?
Velocity is a vector quantity; it is direction-aware. Velocity is the rate at which the position changes.
What are the units for motion?
Motion is measured in distance and speed. The units for distance in metres (m), and the units for speed in seconds (s).
How do we record motion?
Motion is usually recorded on a distance-time graph or a speed- time graph.
What is Newton’s first law of motion?
An object at motion will stay at motion, while an object at rest will stay at rest unless acted upon by an external force.
What is Newton’s second law of motion?
The greater the mass of an object, the greater the force required to move it.
What is Newton’s third law of motion?
For every action, there is an equal and opposing reaction.
How is distance derived from a speed-time graph?
By finding the area underneath the graph using the formula (a =bh) or (a =bh/2).
What unit is acceleration measured in?
Ms-2 (metres per second per second).
On a distance-time graph, a horizontal line represents…
The object is stationary.
On a speed-time graph, a horizontal line represents…
The object is in constant motion.
What does a curved line represent on a distance/time graph?
Acceleration or deceleration
