A boy throws a ball in air at 60^@ to t...

A boy throws a ball in air at ` 60^@` to the horizontal along a road with a speed of ` 10 m//s`. Another boy sitting in a car passing by 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 explanation to support your diagram.

Text Solution

Verified by Experts

Consider the diagram below

The boy throws the ball at an angle of `60^(@)`. `:.` Horizontal component of velocity `4 cos theta`
`=(10//m)cos60^(@)=10xx1/2=5m//s`
Speed of the car `=18 km//h=5 m//s`
As horizontal speed of ball and car is same, hence relative velocity of car and ball in the horizontal direction will be zero. only vertical motion of the ball will be seen by the boy in the car, as shown in the figure

Topper's Solved these Questions

CENGAGE PHYSICS DPP
CENGAGE PHYSICS|Exercise single correct type|14 Videos
CAPACITOR AND CAPACITANCE
CENGAGE PHYSICS|Exercise Integer|5 Videos
CENTRE OF MASS CONVERSATION OF MOMENTUM AND COLLISION
CENGAGE PHYSICS|Exercise Question Bank|38 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 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.

A boy throws a ball up ward with a speed of 12m/s The wind imparts a horizontal acceleration of 0.4 m//s^(2) . At what angle theta to the vertical, the ball must be thrown so that it returns to the point of release.

an open car is moving on a road with a speed of 100 kmh ^(-1) . A man sitting in the car fires a bullet from the gun in the oppositve direction. If the spedd of the bullet is 250kmh ^(-1) relative to the car.then find its (bullt 's ) speed with respect to an observe on the ground.

A ball was thrown by a boy a at angle 60^(@) with horizontal at height 1 m from ground. Boy B is running in the plane of motion of ball and catches the ball at height 1 m from ground. He finds the ball falling vertically. If the boy is running at a speed 20 km/hr. Then the velocity of projection of ball is-

A boy throws a ball upward with velocity v_(0)=20m//s . The wind imparts a horizontal acceleration of 4m//s^(2) to the left. The angle theta at which the ball must be thrown so that the ball returns to the boy's hand is : (g=10ms^(-2))

CENGAGE PHYSICS-CENGAGE PHYSICS DPP-subjective type

A particle moving along a straight line with a constant acceleration o...
Text Solution
|
A driver having a definite reaction time is capable of stopping his ca...
Text Solution
|
A boy throws a ball in air at 60^@ to the horizontal along a road wit...
Text Solution
|
A girl riding a bicycle with a speed of 5 m//s to wards Noth directio...
Text Solution
|
A cyclist starts form centre O of a circular park of radius 1 km and...
Text Solution
|
A rod AB is moving on a fixed circle of radius R with constant velocit...
Text Solution
|
A helicopter of mass 2000 kg rises with a vertical acceleration of 15m...
Text Solution
|
Find all the normal reaction N(AG),N(BG),N(AB) and the acceleration of...
Text Solution
|
Two blocks are placed at rest on a smooth fixed inclined place. A forc...
Text Solution
|
Find out the acceleration of the blocks and tensions in the strings.
Text Solution
|
In which of the following cases the magnitude of acceleration of the b...
Text Solution
|
The block of mass m is being pulled by a horizontal force F=2mg applie...
Text Solution
|
Suppose you are sitting on an accelrating trolley car. (i) Find the ...
Text Solution
|
A man of mass m is standing on a lift which moves down with an upward ...
Text Solution
|
The block of mass m is in equilibrium relative to the smooth wedge of ...
Text Solution
|
A force F is applied on block A of mass M so that the tension in light...
Text Solution
|
In pulley syste shown in figure, block C is going up at 2(m)/(s) and b...
Text Solution
|
System is shown in the figure and man is pulling the rope from both si...
Text Solution
|
An ideal speing, with a pointer attached to its end, hangs next to a s...
Text Solution
|
In an elevator a system is arranged as shown in figure. Initially elev...
Text Solution
|