The rate of change of displacement with time is
speed
acceleration
retardation
velocity
The SI unit for the average velocity is
m/s
km/s
cm/s
mm/s
Unit of acceleration is
ms
m/s2
none of these
A body whose speed in a particular direction is constant
must be accelerated
might be accelerated
has a constant velocity
cannot be accelerated
The SI unit for angular velocity is
rad
rad/s
m/rad
In Fig.1.34, BC represents a body moving
backward with uniform velocity
forward with uniform velocity
backward with non-uniform velocity
forward with non-uniform velocity
In the equation of motion, S = ut +1/2 at2 , S stands for
distance in t seconds
distance in the tth second
maximum height reached
Which of the following physical quantity is different from others ?
displacement
force
kinetic energy
In a vacuum chamber if a coin and a feather are dropped from the same height at the same time,which of them reaches the bottom surface first?
coin
Feather
Both of them reach the bottom at the same time
Cannot be predicated.
If the time-displacement graph of a particle is parallel to the time-axis, the velocity of the particle is
infinity
equal to acceleration of the body
unity
zero
