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Physics For Class IX (Science Group)
UNIT 2: KINEMATICS
Numericals
WORKED EXAMPLES
SPEED
Worked Example 1: A car travels 700 m in 35 seconds what is the speed of car?
Worked Example 2: The speed of train is 108 kmh-1. How much distance will be covered in 2 hours?
ACCELERATION
Worked Example 3: A bus start from rest and travels along a straight path its velocity become 15 ms-1 in 5 seconds. Calculate acceleration of the bus?
Worked Example 4: A motorcyclist moving along a straight path applies brakes to slow down from 10 ms-1 to 3ms-1 in 5 seconds. Calculate its acceleration.
EQUATION OF MOTION
Worked Example 5: A car moving on a road with velocity 30 ms-1, when brakes are applied its velocity decreases at a rate of 6 meter per second. Find the distance it will cover before coming to rest.
Worked Example 6: A motor cycle moving with velocity of 40 ms-1. It gets accelerating at a rate of 8 ms-2. How much distance will it cover in the next 10 seconds.
MOTION DUE TO GRAVITY
Worked Example 7: A ball is thrown vertically upward with velocity of 12 ms-1. The ball will be slowing down due to pull of Earth’s gravity on it, and will return back to Earth. Find out the time the ball will take to reach the maximum height.
TEXT BOOK EXERCISE
TYPES OF MOTION
EQUATION OF MOTION
MOTION DUE TO GRAVITY
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