G 9 motion 1

the change of an object position as time passes

• speed

• motion

• acceleration

car motion considered as .......... motion

• curved

• straight

• mixed

..................... physical quantity that used to describe motion

• speed

• length

• mass

the two factors necessary to calculate speed

• motion / time

• length / time

• distance / time

from the units of speed .................................

• km/ hr

• m/ s

• g /cm3

a boy runs at a speed of 4 m / s for 10 s what is the distance covered ?

• 4 m

• 40 m

• 400 m

a bus covers 500 m in 2.5 s what is the speed?

• 200 m

• 2000 m

• 2.5 km

car covers 120 km in half hour so its speed

• 120 km /hr

• 120 m /s

• 240 km/hr

cars and planes provided by speedometer to identifying the speed of it directly

• true

• false

what is meant by :

the speed of car is zero ?

• the car moves slowly

• the car is at rest

• the car moves so slowly