Advertisements
Advertisements
प्रश्न
If we denote speed by S, distance by D and time by T, the relationship between these quantities is ______.
विकल्प
S = D × T
T = `"S"/"D"`
S = `1/"T" xx "D"`
S = `"T"/"D"`
Advertisements
उत्तर
If we denote speed by S, distance by D and time by T, the relationship between these quantities is `underlinebb(S = 1/T xx D)`.
Explanation:
Speed (S) is calculated as the distance (D) traveled divided by the time (T) taken to travel that distance.
Therefore, the correct formula is `S = D/T`
APPEARS IN
संबंधित प्रश्न
What can you say about the motion of an object whose distance-time graph is a straight line parallel to the time axis?
Given figure shows the distance-time graph of three objects A, B and C. Study the graph and answer the following questions:

- Which of the three is travelling the fastest?
- Are all three ever at the same point on the road?
- How far has C travelled when B passes A?
- How far has B travelled by the time it passes C?
The speed-time graph for a car is shown in the following figure:

- Find how far the car travels in the first 4 seconds. Shade the area on the graph that represents the distance travelled by the car during the period.
- Which part of the graph represents uniform motion of the car?
What conclusion can you draw about the speed of a body from the following distance-time graph ?

A car is travelling at 20 m/s along a road. A child runs out into the road 50 m ahead and the car driver steps on the brake pedal. What must the car’s deceleration be if the car is to stop just before it reaches the child ?
Two friends leave Delhi for Chandigarh in their cars. A starts at 5 am and moves with a constant speed of 30 km/h, whereas B starts at 6 am and moves with a constant speed of 40 kmh-1. Plot the distance-time graph for their motion and find at what time the two friends will meet and at what distance from Delhi.
Starting from A, Paheli moves along a rectangular path ABCD as shown in figure. She takes 2 minutes to travel each side. Plot a distance-time graph and explain whether the motion is uniform or non-uniform.

Boojho goes to the football ground to play football. The distance-time graph of his journey from his home to the ground is given in the figure.

- What does the graph between points B and C indicate about the motion of Boojho?
- Is the motion between 0 to 4 minutes uniform or non-uniform?
- What is his speed between 8 and 12 minutes of his journey?
The area under velocity time graph represents ______.
Assertion: The position-time graph of a uniform motion in one dimension of a body can have a negative slope
Reason: When the speed of the body decreases with time then, the position-time graph of the moving body has a negative slope.
