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
What name is given to the speed in a specified direction ?
Name the physical quantity obtained by dividing ‘Distance travelled’ by ‘Time taken’ to travel that distance.
Fill in the following blank with suitable word:
The physical quantity which gives both, the speed and direction of motion of a body is called its……………
A car is moving along a straight road at a steady speed. It travels 150 m in 5 seconds:
How far does it travel in 6 seconds ?
Which of the following could not be a unit of speed?
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.
A car accelerates at a rate of 5 m s-2. Find the increase in its velocity in 2 s.
For the motion with uniform velocity , how is the distance travelled related to the time ?
A body moves from rest with uniform acceleration and travels 270 m in 3 s. Find the velocity of the body at 10 s after the start.
Draw a diagram to show the motion of a body whose speed remains constant, but velocity changes continuously.
