Home
Class 11
PHYSICS
A boy travelling in an open car moving o...

A boy travelling in an open car moving on a levelled road with constant speed tosses a ball vetically up in the air and catches it back. Shetch the motion of the ball as observed by a boy stanceing on the footpath. Give explanation to support your diagream.

Text Solution

Verified by Experts

For a ground observer, the ball is a projectile with speed (u) making an angle of projection ` theta` the horizontal direction as shown in Fig. 2 (RP). 19 (b). The ball will follow a parabolic path . Fig. 2 (EP). 19 (a)
.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • KINEMATICS

    PRADEEP|Exercise 1 Long answer|2 Videos
  • KINEMATICS

    PRADEEP|Exercise 2 Long answer|3 Videos
  • KINEMATICS

    PRADEEP|Exercise 5 Short answer|6 Videos
  • GRAVIATION

    PRADEEP|Exercise Assertion-Reason Type Questions|19 Videos
  • LAWS OF MOTION

    PRADEEP|Exercise Assertion- Reason Type Questions|17 Videos

Similar Questions

Explore conceptually related problems

A boy throws a ball in air at 60^@ to the horizontal along a road with a speed of 10 m//s (km //h). Another boy sitting in a passing by car observes the ball. Sketch the motion of the ball as observed by the boy in the car, If car has a speed of (18 km //h). Give ezplanation to support your diagravm.

A boy throws a ball up and catches it when the ball falls back. In which part of the motion is the ball decelerating ?

Knowledge Check

  • A person sitting in an open car moving at constant velocity throws a ball vertically up into air. The ball falls

    A
    Outside the car
    B
    In the car ahead of the person
    C
    In the car to the side of the person
    D
    Exactly in the hand which threw it up
  • A boy is sitting in a car moving with uniform velocity. The boy throws a ball vertically upwards which falls back into his hands. A man standing on the road watches the motion of the ball. The path of the motion of the ball will be:

    A
    a straight line for the man
    B
    a straight line for the boy
    C
    a parabola for the man
    D
    a parabola for the boy
  • A bus moves over a straight level road with a constant acceleration a. A boy in the bus drops a ball out side. The acceleration of the ball w.r.t the bus and the earth are respectively

    A
    `sqrt(a^(2)+g^(2)),g`
    B
    `g,sqrt(a^(2)+g^(2))`
    C
    `a,g`
    D
    `g,a`
  • Similar Questions

    Explore conceptually related problems

    A boy is standing inside a train moving with a constant velocity of magnitude 10 m/s. He throws a ball vertically up with a speed 5 m/s relative to the train. Find the radius of curvature of the path of the L ball just at the time of projection.

    A man standing inside a room of length L rolls a ball along the floor at time t = 0 . The ball travels at constant speed v relative to the floor, hits the front wall (B) and rebounds back with same speed v. The man catches the ball back at the wall A at time t_(0) . The ball travelled along a straight line relative to the man inside the room. Another observer standing outside the room found that the entire room was travelling horizontally at constant velocity v in a direction parallel to the two walls A and B. (a) Find the average speed of the ball in the time interval t = 0 to t = t_(0) as observed by the observer outside the room. (b) If the room has acceleration in the direction of its velocity draw a sketch of the path of the ball as observed by the observer standing outside. Assume that velocity of room was v at the instant the ball was released.

    A base ball player has a nightmare. He is accidentally locked in a railroad boxcar. Fortunately, he has his ball and bat along. To start the car moving, he stands at one end bats the ball towards the other end. The impulse exerted by the ball as it hits the end wall, gives the car a forward motion. Sice the ball always rebounds and rolls along the floor back to him, the player repeats this process over and over. Eventually the car attains a very high speed, and the player is killed as the boxcar collides with another car sitting at rest on the track. Analyze this dream and the physics concepts involved in it.

    A ball is projected in vertical x–y plane from a car moving along horizontal x direction. The car is speeding up with constant acceleration. Which one of the following trajectory of the ball is not possible in the reference frame attached to the car? Give reason for your answer. Explain the condition in which other trajectories are possible. Consider origin at the point of projection.

    A car A is travelling on a straight level road with a uniform speed of 60 km/h. It is followed by another car B which in moving with a speed of 70 km/h. When the distance between then is 2.5km, the car B is given a deceleration of 20(km)/(h^2) . After how much time will B catch up with A