physcs- dynamics- scalers and vectors

Define vectors and scaler quantities

scalers: has only magnitude

Vectors: has magnitude and direction

Know if: forces, speed, velocity, distance, displacement, acceleration, mass, time, energy, are scalar or vectors

Scalers: speed, distance, mass, time, energy

Vectors: force, velocity, displacement, acceleration,

Calculate the resultant of tow vectors: in one dimension, or at a right angle

Determine displacement, distance, velocity and/or speed using a calculation

•add the vectors head to tail

•remember to include the compass point (eg. east of south)

Use appropriate relationships to solve problems: s= vt, d= Vt, s=Vt

Describe experiments to measure average speed and instantaneous speed

To measure average speed

1. Choose a Distance: Select a straight path of a known length. For example, you could use a 10-meter track.

2. Measure Time: Use a stopwatch to measure the time it takes for an object (like a toy car or a person walking) to travel the chosen distance.

3. Calculate Average Speed: Use the formula: average speed = total distance / total time.

For measuring instantaneous speed,

1. Using Light Gates:

* Set up two light gates connected to a data logger at a very short distance apart

* As an object passes through the first light gate, the timer starts, and it stops when the object passes through the second light gate.

* The data logger records the time taken.

* Calculate instantaneous speed using: instantaneous speed = distance between light gates / time recorded.