Motion, Forces and Energy

Question 1

What are Scalar and Vector Quantities

Answer 1

A Scalar Quantity only has Magnitude and a Vector Quantity has both Magnitude and Direction.
Scalar: Speed, Distance, Time, Mass, Energy, Temperature, Volume.
Vector: Force, Weight, Velocity, Acceleration, momentum, Electric field strength, Gravitational field strength.

Question 2

Speed Time Graphs:
Horizontal line along time axis.
A non-zero horizontal line.
Constant acceleration.
Changing Acceleration.
Constant Deceleration.

Answer 2

At rest.
Moving at constant speed.
Straight line with a positive gradient.
Curved line.
Straight line with a negative gradient.