Velocity is a
scalar quantity
vector quantity
Both scalar and vector
none of these
A projectile has maximum range when the angle of projection is
900
450
600
300
Path of a projectile is known as
Parabola
Hyperbola
Straight line
Circle
The reflected sound is called
Echo
Resonance
Reverberation
Pitch
The distances travelled by a body falling freely from rest in the first ,second and third seconds respectively are in the ratio:
1 : 4 : 9
1 : 2 : 3
1 : 9 : 25
1 : 3 : 5
If a bucket containing water is kept revolving at a high speed in a vertical circle, the water does not spill. It gets
Centripetal force
Magnetic force
Gravitational force
None of these
Which force has the following situation such as motor cyclist revolving in a circus globe?
Electrical force
S.I unit of momentum is
kg m/s2
kg m/s
kgm-1s-1
kgs
The sound produced by musical instruments in big halls may linger even after the instrument stops producing sound. This is known as
A car which travels through the road with different velocities in equal intervals of time is said to have
Uniform acceleration
Nonuniform acceleration
Retardation
Uniform motion
