Motion

A boy walks 10m in straight path moving away from a lamp pole in a garden and walks5m back on the same path.

What is the displacement of the boy from the lamp pole?

• 0m

• 5m

• 10m

• 15m

Two cars X and Y are travelling along a straight road. The two cars are said to be in uniform motion when:

• (a)the two cars travel with same speed

• (b)they continuously travel along the straight road

• (c)the speed of the cars reduces with the same rate

• (d)the two cars travels equal distance in equal interval of time

A student completes his journey from his house to school with an average speed of 5m/ s in 10 minutes. If the student travels with the speed of 5 m/ s in first 4 minutes. What will be its speed in next 6 minutes?

• (a)5 m/s

• (b)7.5 m/s

• (c)10 m/s

• (d)12.5 m/s

A car travels on a straight road with a velocity of 25km/ hour in first one hour and in the next one hour it changes its speed to 35km/ hour. What is the average velocity of the car?

• 30km/h

• 20km/h

• 30.30 km/h

Automobiles are fitted with a device that show the distance traveled . such a device is known ----------

(a) odometer

(b) Speedo meter

(C) octameter

(D) decameter

• a

• b

• c

• d

The shortest distance between initial and final position :

• Distance

• Velocity

• speed

• Displacement

Distance is a _______ quantity

• vector

• scalar

• both

• none

The slope in distance time graph gives us

• velocity

• speed

• acceleration

• none

Which has more speed A or B?

• A

• B

• same

SI unit of acceleration is

• m/s

• m/s²

• m/min

• km/hr