Advertisements
Advertisements
प्रश्न
A ball hits a wall horizontally at 6.0 m s-1. It rebounds horizontally at 4.4 m s-1. The ball is in contact with the wall for 0.040 s. What is the acceleration of the ball ?
Advertisements
उत्तर
We have to find the value of uniform acceleration.
We have:
Initial velocity (u) = 6 m/s
Final velocity is in opposite direction to that of initial velocity (v) = –4.4 m/s
Time taken (t) = 0.04 s
Acceleration :
`a = "υ-u"/t`
Put the values in the above equation to get the value of acceleration .
`a = "-4.4-6"/0.04`
= `10.4/0.04`
= `-260 "m/s"^2`
APPEARS IN
संबंधित प्रश्न
What is the Differnece between speed and velocity ?
What does the path of an object look like when it is in uniform motion?
A car is moving along a straight road at a steady speed. It travels 150 m in 5 seconds:
How long does it take to travel 240 m ?
A bus moving along a straight line at 20 m/s undergoes an acceleration of 4 m/s2. After 2 seconds, its speed will be:
The diagram below shows the pattern of the oil on the road at a constant rate from a moving car. What information do you get from it about the motion of the car.
A car moving on a straight path covers a distance of 1 km due east in 100 s. What is the speed of the car?
A car accelerates at a rate of 5 m s-2. Find the increase in its velocity in 2 s.
From the displacement-time graph of a cyclist given below in the Figure, find The average velocity in the first 4 s.
What are the uses of equations of motion?
Distinguish between speed and velocity.
