Advertisements
Advertisements
Question
What is the Differnece between speed and velocity ?
Advertisements
Solution
(i) Speed is a scalar quantity, whereas velocity is a vector quantity.
(ii) Speed of a body is the distance travelled by it per unit time, whereas the velocity of a body is the distance travelled by it per unit time in a given direction.
(iii) Speed is always positive, while velocity can be both positive and negative, depending upon the direction.
APPEARS IN
RELATED QUESTIONS
In addition to speed, what else should we know to predict the position of a moving body ?
Arrange the following speed in increasing order (keeping the least speed first
A scooter moving with a speed of 30 km/h.
A train starting from Railway Station attains a speed of 21 m/s in one minute. Find its acceleration.
A snail covers a distance of 100 metres in 50 hours. Calculate the average speed of snail in km/h.
An aircraft travelling at 600 km/h accelerates steadily at 10 km/h per second. Taking the speed of sound as 1100 km/h at the aircraft’s altitude, how long will it take to reach the ‘sound barrier’ ?
When is a body said to be in motion?
A car travels the first 30 km with a uniform speed of 60 km h−1 and the next 30 km with a uniform speed of 40 km h−1. Calculate :
- The total time of journey,
- The average speed of the car.
Write down the type of motion of a body along with the A – O – B of the following distance – time graph.
What are the uses of equations of motion?
A motorcyclist drives from A to B with a uniform speed of 30 km h–1 and returns back with a speed of 20 km h–1. Find its average speed.
