EASY
9th CBSE
IMPORTANT
Earn 100

Define speed. What is the SI unit of speed?

Important Questions on Motion

EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 1 - Motion>Long Answer Type Questions>Q 36
What is meant by (i) average speed and (ii) uniform speed?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 1 - Motion>Long Answer Type Questions>Q 37
Define velocity. What is the SI unit of velocity?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 1 - Motion>Long Answer Type Questions>Q 37
What is the difference between speed and velocity?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 1 - Motion>Long Answer Type Questions>Q 37
Convert a speed of 54 km/h into m/s.
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 1 - Motion>Long Answer Type Questions>Q 38
What is meant by the term 'acceleration'? State the SI unit of acceleration.
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 1 - Motion>Long Answer Type Questions>Q 38
Define the term 'uniform acceleration'. Give one example of a uniformly accelerated motion.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 1 - Motion>Long Answer Type Questions>Q 39
The distance between Delhi and Agra is 200 km. A train travels the first 100 km with a speed of 50 km h-1. How fast must the train travel the next 100 km , so as to average 70 km h-1 for the whole journey?
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 1 - Motion>Long Answer Type Questions>Q 40
A train travels the first 15 km at a uniform speed of 30 km h-1; the next 75 km at a uniform speed of 50 km h-1; and the last 10 km at a uniform speed of 20 km h-1. Calculate the average speed for the entire train journey?