Advertisements
Advertisements
प्रश्न
Explain why, the motion of a body which is moving with constant speed in a circular path is said to be accelerated.
Advertisements
उत्तर
The motion of a body is said to be an accelerated one if the velocity of the body changes with time. In uniform circular motion the magnitude of velocity remains constant but the direction of motion changes at every instant. So, the motion is an accelerated one.
APPEARS IN
संबंधित प्रश्न
Fill in the following blank with suitable word :
If a body moves with uniform velocity, its acceleration is ..............
Explain the meaning of the following equation of motion :v = u + at, where symbols have their usual meanings.
A car acquire a velocity of 72 km per hour in 10 second starting from rest. Find
(1) the acceleration,
(2) the average velocity, and
(3) the distance travelled in this time.
The figure shows the displacement - time graph for four bodies A, B C and D. In each case state what information do you get about the acceleration (zero, positive or negative).

When is the negative acceleration?
Can you suggest a real-life example about the motion of a body from the following velocity – time graph?

Can you suggest a real-life example about the motion of a body from the following velocity – time graph?

How will the equations of motion for an object moving with a uniform velocity change?
An object starting from rest travels 20 m in the first 2 s and 160 m in the next 4 s. What will be the velocity after 7 s from the start?
When will you say a body is at uniform acceleration?
