Advertisements
Advertisements
Question
A train starting from Railway Station attains a speed of 21 m/s in one minute. Find its acceleration.
Advertisements
Solution
(b) We will find the value of uniform acceleration.
Initial velocity (u) 0 m/s
Final velocity (v) = 21 m/s
Time taken (t) = 60 s
Acceleration :
`a = (v-u)/t`
Putting the values in the above equation , we get :
`a = (21-0)/60`
= `0.35 "m/s"^2`
APPEARS IN
RELATED QUESTIONS
What does the path of an object look like when it is in uniform motion?
During an experiment, a signal from a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station? The signal travels at the speed of light, that is, 3 × 108m s−1.
A tortoise moves a distance of 100 metres in 15 minutes. What is the average speed of tortoise in km/h ?
One of the following is not a vector quantity. This one is :
A bus moving along a straight line at 20 m/s undergoes an acceleration of 4 m/s2. After 2 seconds, its speed will be:
The speed of a car is 72 km h-1. Express it in m s-1.
Express the following in m s-1.
18 km min-1
What is the relation between distance and time when the body is moving with uniform velocity?
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?
