Motion Science - Motion

A student draws a distance-time graph for a moving scooter and finds that a section of the graph is a horizontal line parallel to the time axis. Which of the following conclusion is correct about this section of the graph?

1. The scooter has uniform speed in this section.
2. The distance travelled by scooter is the maximum in this section.
3. The distance travelled by the scooter is the minimum in this section.
4. The distance travelled by the scooter is zero in this section.

A boy is sitting on a merry-go-round which is moving with a constant speed of 10 ms^-1. This means that the boy is:

1. At rest.
2. Moving with no acceleration.
3. In accelerated motion.
4. Moving with uniform velocity.

 A bus increases its speed from 36km/h to 72km/h in 10 seconds. Its acceleration is:

1. 5m/s²
2. 2m/s²
3. 6m/s²
4. 1m/s²

A sprinter is running along the circumference of a big sports stadium with constant speed Which of following do you think is changing in this case?

1. Magnitude of acceleration being produced.
2. Distance covered by the sprinter per second.
3. Direction in which the sprinter is running.
4. Entripetal force acting on the sprit.

When a car driver travelling at a speed of 10m/s applies brakes and brings the car to rest in 20s, then retardation will be:

1. +2m/s²
2. -2m/s²
3. -0.5m/s²
4. +0.5m/s²

1. Speedometer. 
2. Odometer.

1. m/s
2. m/s²

1. A cricket ball thrown vertically upwards and returning to the hands of the thrower?
2. A trolley decelerating to a constant speed and then accelerating uniformly?

A body with an initial velocity x moves with a uniform acceleration y. Plot its velocity-time graph.

A body is moving along a circular path of radius R. What will be the distance travelled and displacement of the body when it completes half a revolution?

What can you say about the motion of a body if:

1. Its displacement-time graph is a straight line?
2. Its velocity-time graph is a straight line?

1. What is the total distance travelled?
2. What is the resultant displacement?

A car is moving on a straight road with uniform acceleration. The speed of the car varies with time as follows:

Draw the speed-time graph by choosing a convenient scale. From this graph:

1. Calculate the acceleration of the car.
2. Calculate the distance travelled by the car in 10 seconds.

A body is moving uniformly in a straight line with a velocity of 5m/s. Find graphically the distance covered by it in 5 seconds.

1. What is the initial speed of the car?
2. What is the maximum speed attained by the car?
3. Which part of the graph shows zero acceleration
4. Which part of the graph shows varying retardation?
5. Find the distance travelled in first 8 hours.

1. What type of motion is represented by OA?
2. What type of motion is represented by AB?
3. What type of motion is represented by BC?
4. What is the acceleration of car from O to A?
5. What is the acceleration of car from A to B?
6. What is the retardation of car from B to C?

The graph given alogside shows the positions of a body at different times. Calculate the speed of the body as it moves from:

1. A to B.
2. B to C.
3. C to D.