Advertisements
Advertisements
प्रश्न
Write the formula for acceleration. Give the meaning of each symbol which occurs in it.
Advertisements
उत्तर
Acceleration is the change in velocity per unit time; it is a vector quantity.
`"Acceleration" = "Change in velocity"/"Time taken"`
The above expression can also be written as :
`a = (v-u)/t`
Where,
a = Acceleration
v = Final velocity
u = Initial velocity
t = Time taken
APPEARS IN
संबंधित प्रश्न
Change the speed of 6 m/s into km/h.
Bus X travels a distance of 360 km in 5 hours whereas bus Y travels a distance of 476 km in 7 hours. Which
bus travels faster ?
Arrange the following speed in increasing order (keeping the least speed first):
A bicycle moving with a speed of 200 m/min.
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.
The speed of a moving object is determined to be 0.06 m/s. This speed is equal to :
Which of the following can sometimes be 'zero' for a moving body?
(i) average velocity
(ii) distance travelled
(iii) average speed
(iv) displacement
Which of the quantity-velocity or acceleration-determines the direction of motion?
Give one example of following motion :
Uniform velocity
A car moving on a straight path covers a distance of 1 km due east in 100 s. What is the speed of the car?
The velocity-time graph of a moving body is given below in Figure

The acceleration in parts AB, BC and CD.
