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प्रश्न
Write the SI unit of retardation.
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उत्तर
SI unit of retardation is ms-2.
संबंधित प्रश्न
Give a scientific reason.
When an object falls freely to the ground, its acceleration is uniform.
A train starts from rest and accelerates uniformly at a rate of 2 m s−2 for 10 s. It then maintains a constant speed for 200 s. The brakes are then applied and the train is uniformly retarded and comes to rest in 50 s. Find
- The maximum velocity reached,
- The retardation in the last 50 s,
- The total distance travelled,
- The average velocity of the train.
A truck running at 90 kmh−1, is brought to rest over a distance of 25 m. Calculate the retardation and time for which brakes are applied.
What does a positive acceleration mean?
A body falls towards the earth. Does it have positive or negative acceleration?
Write the SI unit of acceleration and retardation.
State if the following situation is possible:
A body moving with a constant velocity in an accelerated motion.
m/s2 is the unit of ______.
The value of acceleration for a body at rest is ______.
When a body is said to be in
- uniform acceleration
- non–uniform acceleration?
