kinematics Questions

The ratio of the distance travelled by a freely falling body in the $1^{st},2^{nd},3^{rd}$ and $4^{th}$ second is:

The displacement-time graphs of two moving particles make angles of $30^{\circ }$ and $45^{\circ }$ with the $x$ -axis as shown in the figure. The ratio of their respective velocity is:

A ball is projected with a velocity, $10{\text{ms}}^{-1}$, at an angle of $60^{\circ }$ with the vertical direction. Its speed at the highest point of its trajectory will be: