Question

1. A ball thrown horizontally from the edge of the top of a building 49 m high strikes the ground 24.5 m from the foot of the building. Find the

(a) time it takes the ball to reach the ground,

(b) initial velocity of the ball, and

(c) velocity just before the ball strikes the ground.

2. An object is launched at a velocity of 20 m/s in a direction making an angle of 250 upward with the horizontal.
a. What is the maximum height reached by the object?

b. What is the total flight time (between launch and touching the ground) of the object?

c. What is the horizontal range of the object?

d. What is the magnitude of the velocity of the object just before it hits the ground?

3. A ball kicked from ground level at an initial velocity of 60 m/s and an angle ɵ with the ground reaches a horizontal distance of 200 meters.

a. What is the size of angle ɵ?

b. What is the time flight of the ball?

4. A ball is thrown horizontally from a building 63 m high with a speed of 25 m/s. find the

(a) vertical and horizontal components the ball’s initial velocity,

(b) time of flight,

(c) distance from the foot of the building where the ball will strike the ground, and

(d) velocity when the ball will strike the ground.

5. A ball rolls off a horizontal tabletop with a speed of 0.8 m/s and strikes the floor in 0.420 s. supposing the absence of air resistance, solve the following problems:

a. What is the height of the table above the floor?

b. What is the horizontal distance from the edge of the table to the point where the ball strikes the floor?

c. What are the horizontal and vertical components of the ball’s velocity just before hitting the floor?

Answer 1

Answer:

erty6eew3huisjbcdsfgh Ghosh CV jldi