2 Chapter- numericals || 9th class physics || Kinematics problems
This video is related to chapter 2 physics numericals of 9th class (Kinematics). (Punjab textbook)@fanticer
0:00 2.1 A train 🚂 moves with a uniform velocity
of 36 km/h for 10s. find the distance
travelled by it. (100m)
4:22 2.2 A train 🚂 starts from rest. it moves
through 1km in 100s with uniform
acceleration. what will be it's speed at
the end of 100s. (20m/s)
7:52 2.3 A car 🚗 has a velocity of 10m/s. it
accelerates at 0.2m/s^2 for half minute.
find the distance travelled during this
time and the final velocity of the car.
(390m, 16m/s)
11:40 2.4 A tennis 🎾 ball 🏀 is hit vertically
upward with a velocity of 30m/s. it
takes 3s to reach the highest point.
calculate the maximum height reached
by the ball. how long it will take to
return to ground? (45m, 6s)
16:26 2.5 A car 🚗 moves with uniform velocity of
40m/s for 5s. it comes to rest in the
next 10s with uniform deceleration.
find (i) deceleration (ii) total distance
travelled by car. (-4m/s^2, 400m)
24:23 2.6 A train 🚂 starts from rest with an
acceleration of 0.5m/s^2. find its speed
km/h, when it has moved through
through 100m. (36km/h)
28:10 2.7 A train 🚄 starting from rest,
accelerates uniformly and attains a
velocity 48km/h in 2 minutes. it travels
at this speed for 5 minutes. finally, it
moves with uniform retardation and is
stopped after 3 minutes. find the total
distance travelled by the train.(6000m)
35:53 2.8 A cricket ball 🏀 is hit 🎯 vertical
upward and returns to ground 6s later.
calculate (i) maximum height reached
by the ball. (ii) initial velocity of the ball.
(45m, 30m/s)
40:23 2.9 when brakes are applied, the speed of
train 🚂 decreases from 96km/h to 48
km/h in 800m. how much further will
the train move before coming to rest?
(Assuming the retardation to be
constant). (266.66m)
47:41 2.10 In the above problem, find the time
taken by the train🚂 to stop after the
the application of brakes. (80s)