Advertisements
Advertisements
प्रश्न
Which of the following could not be a unit of speed?
विकल्प
km/h
s/m
m/s
mm s−1
उत्तर
s/m
Speed is the distance travelled by a moving body per unit time.
APPEARS IN
संबंधित प्रश्न
What is the Differnece between speed and velocity ?
State whether speed is a scalar or a vector quantity. Give reason for your choice.
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’ ?
A car is moving on a straight road with uniform acceleration. The speed of the car varies with time as follows :
Time (s) : 0 2 4 6 8 10
Speed (m/s) : 4 8 12 16 20 24
Draw the speed-time graph by choosing a convenient scale. From this graph :
(1) Calculate the acceleration of the car.
(2) Calculate the distance travelled by the car in 10 seconds.
One of the following is not a vector quantity. This one is :
Give one example of following motion :
Variable velocity
Express the following in m s-1.
1 km h-1
Write down the type of motion of a body along with the A – O – B of the following distance – time graph.
Derive th e equation of motion.
S = ut+ `1/2` at2,
Where the symbols have their usual meanings
