Question

A Batsman hits a Sixer and the ball touches the ground outside the cricket ground. Which of the Following graph describes the variation of the Cricket ball’s Vertical Velocity V with time between the time t1 as it hits the bat and time t2 When it touches the ground
A.

B.

C.

D.

Answer 1

Hint: At time $t_1$ the velocity of the ball is maximum and goes on decreasing Concerning time. At the highest point, its velocity becomes zero, then it increases but the direction is reversed. The velocity-time graph helps to understand the speed of an object. The position-time graph helps to understand the motion of the object over a particular time.

Complete answer:
The slope of the Velocity graph denotes the Acceleration of the object. If the acceleration is zero then the slope is zero; it is like a horizontal line. If acceleration is positive, then the slope is positive; it is like an upward sloping line. If Acceleration is negative then the slope will be negative which is like the downward sloping line

The speed is the time rate at which the object is moving along the path whereas the velocity is the rate and direction of an object’s movement. The speed is straightforward. When the slope is steep the object will change Velocity rapidly. When the Slope is shallow the object does not change its velocity as rapidly.

Hence the answer is option C.

Note: If the acceleration is zero then the velocity is constant throughout the time
When the Acceleration is constant the initial velocity is zero. Then the velocity of the particle will increase linearly. When the acceleration is increasing Concerning the time then the velocity-time graph will be curved. Hence the acceleration is continuously increasing with time and the magnitude of the slope also increases.