2.1 Linear Motion

What is meant by linear motion?

• motion of an object

• motion is a straight line

• motion going forward

• motion without acceleration

Distance is a _____________ quantity

• scalar

• vector

"the rate of change of displacement" is the definition for..?

• velocity

• acceleration

• speed

• distance

Deceleration is defined as________________.

• increase of speed or velocity

• decrease of speed or velocity

• time taken for a journey

• total length measured

An object starts its linear motion from rest. Which of the following quantities DOES NOT change throughout the motion?

• time

• final velocity

• initial velocity

• acceleration

When one object is travelling with a constant velocity, its acceleration will be....

• constant

• zero

• uniform

• increasing

An aeroplane is flying with decreasing acceleration, hence its velocity is ......

• increasing

• decreasing

• constant

How is velocity different than speed?

• speed opposes velocity

• velocity is speed with a direction

• speed only has direction

How is displacement different from distance?

• always positive

• can be positive, negative or zero

• always in unit ms^-1

"the average velocity over an infinitesimally short time interval" is the definition of...

• average velocity

• instantaneous velocity

• uniform velocity

• constant velocity