Embibe Experts Solutions for Exercise 1: EXERCISE

If a stone projected from the ground, takes $4 \mathrm{s}$ to reach the topmost point of its trajectory, then the time of flight is:

The time of flight of an object projected with speed $20 \mathrm{m}{ \mathrm{s}}^{-1}$ at an angle $30°$ with the horizontal, is

Angular speed of a uniformly circulating body with time period $T$ is

Speed of an object moving in circular path of radius $10 \mathrm{m}$ with angular speed $2 \mathrm{rad} {\mathrm{s}}^{-1}$ is

Centripetal acceleration of a cyclist completing $7$ rounds in a minute along a circular track of radius $5 \mathrm{m}$ with a constant speed, is

If the frequency of an object in uniform-circular motion is doubled, its acceleration becomes.

A body is moving on a circle of radius $80 \mathrm{m}$ with a speed $20 \mathrm{m} {\mathrm{s}}^{-1}$ which is decreasing at the rate $5 \mathrm{m} {\mathrm{s}}^{-2}$ at an instant. The angle made by its acceleration with its velocity is

The distance of a particle moving on a circle of radius $12 \mathrm{m}$ measured from a fixed point on the circle and measured along the circle is given by $s=2t^3$ (in meters). The ratio of its tangential to centripetal acceleration at $t=2 \mathrm{s}$ is