Advertisements
Advertisements
प्रश्न
A car is moving with a speed of 50 km/h. One second later, its speed is 55 km/h. What is its acceleration?
Advertisements
उत्तर
Initial speed of car u = 50 km/h.
Final speed of car v = 55 km/h.
Time taken by car to attain this speed is = 1 sec. = 1/3600 hr.
Acceleration of the car is = (55 - 50 )X 3600 = 18000 kmh-2.
APPEARS IN
संबंधित प्रश्न
Give one example of the following motion:
Uniform retardation
Define the term acceleration due to gravity. State its average value.
Figure given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.
Which part of graph shows motion with uniform
(a) velocity (b) acceleration (c) retardation ?
A bullet initially moving with a velocity 20 m/s strikes a target and comes to rest after penetrating a distance 10 cm into the target. Calculate the retardation caused by the target.
Distinguish between uniformly and non-uniformly accelerated motions.
What do you understand about negative acceleration?
When an object undergoes acceleration ______.
Acceleration is a scalar.
It is possible to have objects moving with uniform speed but variable acceleration.
When a body is said to be in
- uniform acceleration
- non–uniform acceleration?
