## 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…

## 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…

## 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…

## 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.

## 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.

## 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…

## 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…

## 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…