Advertisements
Advertisements
प्रश्न
How is the distance related with time for motion under uniform acceleration such as the motion of a freely falling body?
Advertisements
उत्तर
For motion under uniform acceleration, such as the motion of a freely falling body, distance is directly proportion to the square of the time.
APPEARS IN
संबंधित प्रश्न
A boy walks from his classroom to the bookshop along a straight corridor towards North. He covers a distance of 20 m in 25 seconds to reach the bookshop. After buying a book, he travels the same distance in the same time to reach back in the classroom. Find (a) average speed, and (b) average velocity, of the boy.
Is displacement a scalar quantity?
When brakes are applied to a bus, retardation produced is 25 cm s-2 and the bus takes 20 s to stop. Calculate -
- The initial velocity of the bus
- The distance travelled by bus during this time.
Explain the following concept in your own words with everyday examples:
Distance
A racehorse runs straight towards the north and covers 540 m in one minute. Calculate
- displacement of the horse,
- its velocity in (a) ms−1 (b) kmh−1.
Calculate the distance and displacement in the following case:
A car travels at a uniform speed of 42 km/h. In 10 minutes, how much distance would it cover?
Geetha takes 15 minutes from her house to reach her school on a bicycle. If the bicycle has a speed of 2 m/s, calculate the distance between her house and the school.
Assertion: Displacement of a body may be zero when distance travelled by it is not zero.
Reason: The displacement is the shortest distance between initial and final position.
______ is the length of the actual path covered by a body.
