The SI unit for the average velocity is
m/s
km/s
cm/s
mm/s
A vehicle moving with a velocity of 10ms-1 is brought to rest at a distance of 50m by the application of break.The acceleration of the body is
1ms-2
2ms-2
-1ms-2
-2ms-2
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
none of these
The speed of a body describing its motion is
direction
state
type
rapidity
A body goes from A to B with a velocity of 20 m/s and comes back from B to A with a velocity of 30 m/s. The average velocity of the body during the whole journey is
zero
24 m/s
25m/s
S.I unit of velocity is
ms
ms-1
ms-2
km/b
A cyclist moves from a certain point X and goes around a circle of radius 'r' and reaches Y, exactly at the other side of the point, X, as shown in Fig.1.44. The displacement of the cyclist would be
2π
A stone tied to a string is whirled in a circle. As it is revolving, the rope suddenly breaks. Then
the stone files off tangentially
the stone moves radially inward
the stone moves radially outward
the motion of the stone depends upon its velocity
S.I unit of retardation is
ms2
In the equation of motion, x = at + bt2 , the units of a and b respectively are
m/s2 , m/s
m/s, m/s2
m/s, m/s
