Home
Class 11
PHYSICS
A ball is thrown from the top of a build...

A ball is thrown from the top of a building `45 m` high with a speed `20 m s^-1` above the horizontal at an angle of `30^@`. Find
(a) The time taken by the ball to reach the ground.
(b) The speed of ball just before it touches the ground.

Text Solution

AI Generated Solution

To solve the problem step by step, we will break it down into two parts: (a) finding the time taken by the ball to reach the ground, and (b) finding the speed of the ball just before it touches the ground. ### Given Data: - Height of the building (h) = 45 m - Initial speed of the ball (v) = 20 m/s - Angle of projection (θ) = 30 degrees - Acceleration due to gravity (g) = 9.81 m/s² (approximately 10 m/s² for simplicity) ...
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS-2

    CENGAGE PHYSICS ENGLISH|Exercise Solved Examples|7 Videos

  • KINEMATICS-2

    CENGAGE PHYSICS ENGLISH|Exercise Exercise 5.1|15 Videos

  • KINEMATICS-1

    CENGAGE PHYSICS ENGLISH|Exercise Integer|9 Videos

  • KINETIC THEORY OF GASES

    CENGAGE PHYSICS ENGLISH|Exercise Compression|2 Videos

Similar Questions

Explore conceptually related problems

From the top of a cliff of height 19.6m a ball is projected horizontally. Find the time taken by the ball to reach the ground (g =9.8 ms^(-2)) .

A cricket ball is thrown at a speed of 30 m s^(-1) in a direction 30^(@) above the horizontal. The time taken by the ball to return to the same level is

A ball is thrown from the top of a 35m high tower with initial velocity of magnitude u=80" ms"^(-1) at an angle 25^(@) with horizontal. Find the time to reach the ground and the horizontal distance covered by the ball.

A ball is thrown from the top of a 35m high tower with initial velocity of magnitude u=80" ms"^(-1) at an angle 25^(@) with horizontal. Find the time to reach the ground and the horizontal distance covered by the ball.

A ball is thrown horizontally from a point 100m above the ground with a speed of 20m//s . Find (a) the time it takes to reach the ground, (b) the horizontal distance it travels before reaching the ground, (c) the velocity (direction and magnitude) with which it strikes the ground.

A ball is thrown upwards with a speed u from a height h above the ground.The time taken by the ball to hit the ground is

From the top of a tower of height 40m, a ball is projected upward with a speed of 20ms^(-1) at an angle of elevation of 30^(@) . Then the ratio of the total time taken by the ball to hit the ground to the time taken to ball come at same level as top of tower.

From the top of a tower of height 40m, a ball is projected upward with a speed of 20ms^(-1) at an angle of elevation of 30^(@) . Then the ratio of the total time taken by the ball to hit the ground to the time taken to ball come at same level as top of tower.

A ball is thrown horizontally from a point 100 m above the ground with a speed of 20 m/s. Find a. the time it takes to reach the ground, b. the horiontal distance it travels before reaching the ground, c. the velocity (direction and magnitude) with which it strikes the ground.

Find the time taken for the ball to strike the ground . If a ball is thrown straight upwards with a speed v from a point h meters above the ground .