## A bus decreases its speed from 80 km h-1 to 60 km h-1 in 5 s. Find the acceleration of the bus.

Q.:- A bus decreases its speed from 80 km h-1  to 60 km h-1 in 5 s. Find the acceleration of the bus.   Answer:- Initial velocity u = 80 km h-1 Final velocity u…

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## When will you say a body is in (i) uniform acceleration? (ii) non-uniform acceleration

Q.:- When will you say a body is in (i) uniform acceleration? (ii) non-uniform acceleration   Answer:- (i) Uniform acceleration: When a body travels with the same velocity in the…

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## During an experiment, a signal from a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station? The signal travels at the speed of light, that is 3 x 108 m s-1?

Q.:- During an experiment, a signal from a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station? The signal travels…

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## What does the path of an object look like when it is in uniform motion?

Q.:- What does the path of an object look like when it is in uniform motion?   Answer:- It is a straight line.

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## What does the odometer of an automobile measure?

Q.:- What does the odometer of an automobile measure?   Answer:- The odometer of an automobile measure the distance travelled by a vehicle.

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## Under what condition(s) is the magnitude of average velocity of an object equal to its average speed?

Q.:- Under what condition(s) is the magnitude of average velocity of an object equal to its average speed?   Answer:- The magnitude of average velocity of an object is equal…

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## Distinguish between speed and velocity?

Q.:- Distinguish between speed and velocity?   Answer:- Speed Velocity 1. The distance travelled by a moving body per unit time is called its speed. 2. It is a scalar…

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## Which of the following is true for displacement? (a) It cannot be zero. (b) Its magnitude is greater than the distance travelled by the object.

Q.:- Which of the following is true for displacement? (a) It cannot be zero. (b) Its magnitude is greater than the distance travelled by the object.   Answer:- (a) False…

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## A farmer moves along the boundary of a square field of side 10 m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds?

Q.:- A farmer moves along the boundary of a square field of side 10 m in 40 s. What will be the magnitude of displacement of the farmer at the end of…

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## An object has moved through a distance. Can it have zero displacement? If yes support your answer with an example.

Q.:- An object has moved through a distance. Can it have zero displacement? If yes support your answer with an example.   Answer:- Yes, the object instead of moving through a distance…

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