What is the direction of acceleration of a body in uniform circular motion? Draw a diagram to demonstrate this.
Important Questions on Motion
A body starts from rest is accelerated uniformly for 30s. If x1, x2, x3 are the distances travelled in first 10s; next 10s and last 10s respectively, then x1 : x2 : x3 is
In the above graph what is the value of acceleration?
(Assuming that the acceleration is uniform)
Is this an example of accelerated motion? Why?
State which of the following situations are possible and give an example for each of these:
An object moving with an acceleration but with uniform speed.
What is the direction of this force? Draw it in your answer sheet.
Identify the kind of motion in the following cases:
A car moving with constant speed turning around a curve.
An electron orbiting around a nucleus.
Is uniform circular motion an example of accelerated motion? Explain.
Is a satellite moving around the Earth in a circular orbit accelerated? Explain.
Name a physical quantity which (i) varies (ii) remains constant when a body moves in a uniform circular motion.
An artificial satellite is moving in a circular orbit of radius . Calculate its speed if it takes hours to revolve around the earth.
