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
When will you say a body is at non-uniform acceleration?
Give one example of a situation in which a body has a certain average speed but its average velocity is zero.
A motorcycle moving with a speed of 5 m/s is subjected to an acceleration of 0.2 m/s2. Calculate the speed of the motorcycle after 10 seconds, and the distance travelled in this time.
A train starting from stationary position and moving with uniform acceleration attains a speed of 36 km per hour in 10 minutes. Find its acceleration.
The slope of a speed-time graph gives:
Differentiate between uniform acceleration and variable acceleration.
The velocity-time graph of a body in motion is a straight line inclined to the time axis. The correct statement is ___________
A body, initially at rest, starts moving with a constant acceleration 2 m s-2. Calculate: (i) the velocity acquired and (ii) the distance travelled in 5 s.
The velocity-time graph (Fig. 8.5) shows the motion of a cyclist. Find (i) its acceleration (ii) its velocity and (iii) the distance covered by the cyclist in 15 seconds.
Two stones are thrown vertically upwards simultaneously with their initial velocities u1 and u2 respectively. Prove that the heights reached by them would be in the ratio of `"u"_1^2 : "u"_2^2` (Assume upward acceleration is –g and downward acceleration to be +g)
