IIT Science Grade 9

Can the displacement be greater than the distance travelled by the object?

• Yes

• No

Which type of speed does the speedometer of a car measures?

• Average speed

• Instantaneous speed

• Uniform speed

• Increasing speed

A person has completed a round of a circular path. What is the total distance & displacement travelled by the person.

• Distance = circumference of a circle; Displacement = radius of a circle.

• Distance = circumference of a circle; Displacement = diameter of a circle.

• Distance = diameter of a circle; Displacement = 0

• Distance = circumference of a circle; Displacement = 0

The odometer of a car reads 5000 km at the start of a trip and 5600 km at the end of the trip. If the trip took 3 hour, Calculate the average speed of a car.

• 100 km/hr

• 200 km/hr

• 300 km/hr

• 400 km/hr

What is/are the correct formula of average speed of an object?

• Average speed = (u + v)/2

• Average speed = (u - v)/2

• Average speed = total distance / total time

• Average speed = total time/ total distance

What does the given (velocity - time) graph represents?

• Uniform acceleration

• Increasing acceleration

• At Rest

• Constant velocity

A bus decreases its speed from 90 km/hr to 54 km/hr in

5 sec. Find the acceleration of the bus.

• ( - 1 m/s²)

• ( - 2 m/s²)

• ( - 3 m/s²)

• ( - 4 m/s²)

Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed of 10 m s^–1. It implies that the boy is -

• At Rest

• Moving with no acceleration

• In accelerated motion

• Moving with uniform velocity

Area under (v-t) graph represents a physical quantity which has the unit

• m²

• m

• m³

• ms^-1

Which of the following figures represents uniform motion of a moving object correctly?

• Graph (a)

• Graph (b)

• Graph (c)

• Graph (d)