Dant را
salallal
Kinematics of Particle
.6 PROBLEMS INVOLVING KINEMATIC OF PARTICLES
1 An athletic champion runs at a speed of 5m/s. On hitting the ropes at the finishing
line, he starts decelerating at a constant rate of 1.3m/s2. Calculate how long it
takes him to stop and how far from the finishing line.
2 A pressurized wine bottle is opened by force and the cork shoots into the air vertically
It takes 15s to rise to its highest position. What is the velocity with which it lef
the bottle?
3 Calculate the constant acceleration required for a car starting from rest to reach
velocity of 20 m/s in 30 s.
A motorcycle accelerates at 3m/s2. It is required to attain a velocity of 100km/hr ove
a distance of 0.3km. Calculate the initial velocity of the motorcycle.
A car starting from rest accelerates at 2.5m/s2 for the first 20 s of its journey. It
then brought to a stop in another 30 s with a uniformly decreasing velocity. Wh
is the total distance travelled?​