A ball is projected with velocity $V_0$ at an angle of elevation $30^o $ . Mark the correct statement
Kinetic energy will be zero at the highest point of the trajectory
Vertical component of momentum will be conserved
Horizontal component of momentum will be conserved
Gravitational potential energy will be minimum at the highest point of the trajectory
If the instantaneous velocity of a particle projected as shown in figure is given by $v =a \hat{ i }+(b-c t) \hat{ j }$, where $a, b$, and $c$ are positive constants, the range on the horizontal plane will be
During which time interval is the particle described by these position graphs at rest?
A particle of mass $m$ is projected with a velocity $V$ making an angle of $45^o$ with the horizontal. The magnitude of the angular momentum of the projectile about the point of projection when the particle is at its maximum height $h$ is
A ball is rolled off the edge of a horizontal table at a speed of $4\, m/s$. It hits the ground after $0.4\, sec$. Which statement given below is true?
Two cars of masses $m_1$ & $m_2$ are moving along the circular paths of radius $r_1$ & $r_2$ respectively. Their speeds are such that they complete one round in same time. The ratio of angular speeds of two cars is