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प्रश्न
Can you use the relation [B1]?
उत्तर
No we cannot use this relation for a body moving with uniform acceleration.
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संबंधित प्रश्न
Give one example of the following motion:
Uniform retardation
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.
Draw velocity – time graph for the following situation:
When a body is moving with variable velocity, but uniform retardation.
From the diagram given below, calculate deceleration.
An aeroplane lands at 216 kmh−1 and stops after covering a runway of 2 m. Calculate the acceleration and the time, in which it comes to rest.
A motor bike running at 90 kmh−1 is slowed down to 18 kmh−1 in 2.5 s. Calculate
- acceleration
- distance covered during slow down.
A body has an acceleration of -3.5 ms-2. What is its retardation?
A car accelerates uniformly from a velocity of 18 km/h to 36 km/h in 15 min. What is its acceleration?
A car starts from rest and it is travelling with a velocity of 20 m/s in 10 s. What is its acceleration?
A boy throws a ball up and catches it when the ball falls back. In which part of the motion the ball is accelerating?
