EASY
9th CBSE
IMPORTANT
Earn 100

Differentiate between speed and velocity.

Important Questions on Motion

MEDIUM
9th CBSE
IMPORTANT
Give three examples in which average speed is not equal to the magnitude of average velocity.
EASY
9th CBSE
IMPORTANT
A car is moving with a speed of 30 ms-1. Find the distance covered by the car in 2 s.
EASY
9th CBSE
IMPORTANT
A car is moving with a speed of 30 ms-1. Find the distance covered by the car in 1 minute.
EASY
9th CBSE
IMPORTANT
An artificial satellite orbits in a circular path. The height of the satellite from the surface of earth is 36,000 km. Such a satellite is called geo-stationary satellite. When the satellite is exactly vertically upwards the ground station, it sends a signal. How much time will the signal take to reach the ground station? The speed of signal is 3×108 ms-1.
MEDIUM
9th CBSE
IMPORTANT
A body travels a distance of 10 km with a constant speed of 30 km h-1 and then the next 40 km at a constant speed of 50 km h-1. Find the average speed for the whole journey.
MEDIUM
9th CBSE
IMPORTANT
A boy goes to market at an average speed of 29 km h-1. Finding the market closed, he immediately returns back by the same path with an average speed of 40 km h-1. Find the average speed for the complete journey.