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प्रश्न
State if the following situation is possible:
A body moving with a constant velocity in an accelerated motion.
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उत्तर
No in an accelerated motion a body cannot have a constant velocity.
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संबंधित प्रश्न
A car travels with uniform velocity of 25 m s-1 for 5 s. The brakes are then applied and the car is uniformly retarded and comes to rest in further 10 s. Find:
- The distance which the car travels before the brakes are applied,
- Retardation and
- The distance travelled by car after applying the brakes.
A cyclist driving at 5 ms−1, picks a velocity of 10 ms−1, over a distance of 50 m. Calculate
- acceleration
- time in which the cyclist picks up above velocity.
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 is the SI unit of acceleration?
Write the SI unit of retardation.
The distance covered by a body is directly proportional to the square of the time elapsed. What can you say about its acceleration?
A car accelerates uniformly from a velocity of 18 km/h to 36 km/h in 15 min. What is its acceleration?
Convert the following acceleration:
1/36 m/s2 into km/h2
When an object undergoes acceleration ______.
What is the difference between uniform acceleration and non–uniform acceleration?
