The speed-time graph of a moving body in a fixed direction is a straight line.The body
is at rest
moves with varying speed
moves with a constant velocity
Moves with a non zero acceleration.
The SI unit for angular velocity is
m/s
rad
rad/s
m/rad
For a uniformly accelerated body if 'u' is the initial velocity and 'v' is velocity after time t,then the displacement of the body after time t is given by
S=ut-1/2at
S=ut1/2at
S=ut-1/2at2
S=ut+1/2at2
The distance travelled by a freely falling body is proportional to
the mass of the body
the square of the acceleration due to gravity
the square of the time of fall
the time of fall
Which of the following is a vector quantity?
Mass
Time
Displacement
Speed
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 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
none of these
The SI unit for the average velocity is
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
A ball is thrown up with a certain velocity. It attains a height of 40 m and comes back to the thrower. Then the
total distance covered by it is 40 m
total displacement covered by it is 80 m
total displacement is zero
total distance covered by it is zero
