Advertisements
Advertisements
प्रश्न
Area under a v – t graph represents a physical quantity which has the unit
विकल्प
m2
m
m3
m s–1
Advertisements
उत्तर
m
The area under the v - t graph represents distance and the unit of distance is meter (m).
APPEARS IN
संबंधित प्रश्न
Fill in the following blank with suitable word :
A motorcycle has a steady……………. of 3 m/s2. This means that every………………. its…………….. increases by………….
What conclusion can you draw about the velocity of a body from the displacement-time graph shown below :
A bus running at a speed of 18 km/h is stopped in 2.5 seconds by applying brakes. Calculate the retardation produced.
A train travelling at 20 m s-1 accelerates at 0.5 m s-2 for 30 s. How far will it travel in this time ?
A freely falling object travels 4.9 m in 1st second, 14.7 m in 2 nd second, 24.5 m in 3rd second, and so on. This data shows that the motion of a freely falling object is a case of :
Define velocity. State its unit.
When is the negative acceleration?
A packet is dropped from a stationary helicopter, hovering at a height ‘h’ from ground level, reaches the ground in 12s. Calculate
- the value of h
- final velocity of packet on reaching the ground. (Take g = 9.8 ms−2)
How will the equations of motion for an object moving with a uniform velocity change?
A girl walks along a straight path to drop a letter in the letterbox and comes back to her initial position. Her displacement–time graph is shown in Fig.8.4. Plot a velocity-time graph for the same.
