A ball is dropped from a building 110m high and hits the ground. What was its...

Question

Question

A ball is dropped from a building 110m high and hits the ground. What was its final velocity in m/s just as it hit the ground

Answer 1

Answer #1

V_i = initial velocity at the top of building = 0 m/s

V_f = final velocity jus before hitting the ground

d = displacement = -110 m

a = acceleration = - 9.8 m/s²

Using the equation

V_f² = V_i² + 2 a d

V_f² = 0² + 2 (-9.8) (-110)

V_f = 46.43 m/s

Add a comment

Answer 2

Similar Homework Help Questions

A 3.00 kg ball is dropped from the roof of a building 176.4 m high

A 3.00 kg ball is dropped from the roof of a building 176.4 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 12.0 N on it. a.)How far from the building does the ball hit the ground? b.)How long does it take to hit the ground? c.)What is its speed when it hits the ground?
A ball is dropped from the top of a building 100 m high. (Ignore air resistance)...

A ball is dropped from the top of a building 100 m high. (Ignore air resistance) a) How long does it take the ball to hit the ground? b) What is the speed of the ball when it hits the ground?
A ball is launched from the top of a building 80 m high at an angle...

A ball is launched from the top of a building 80 m high at an angle of above the horizontal with a speed of 63 in/s. How long does it take before the ball reaches its highest point? What is the maximum height of the ball above the ground? How long is the ball in the air before it hits the ground? How far does the ball travel horizontally before it hits the ground? What is the acceleration of the...

A ball is dropped from the top of a 68 m building. How long does it...

A ball is dropped from the top of a 68 m building. How long does it take for the ball to hit the ground? In the previous problem, what is the speed of the object the instant before it hits the ground?
5. A ball is dropped from rest from the top of a building of height h...

5. A ball is dropped from rest from the top of a building of height h 100.25 m friction, find (a) How long does it take the ball to hit the ground? (b) What speed (b) What speed does the ball travel the instant before it hits the ground?
A bowling ball falls off the top of a building and hits the ground with a...

A bowling ball falls off the top of a building and hits the ground with a velocity of 40 m/s How high is the building? How long does it take?

From the top of a 70 m building, you throw a ball straight up at 6...

From the top of a 70 m building, you throw a ball straight up at 6 m/s. The ball misses the building on the way down. What is the maximum height of the ball? What is the velocity of the ball after 2 s? What is the final velocity of the ball (just before it hits the ground) Now, the ball is thrown straight down at 6 m/s. What is the velocity of the ball after 2 s? Using the initial...
A player hits a tennis ball close to the ground with an initial velocity of 32...

A player hits a tennis ball close to the ground with an initial velocity of 32 m/s at an angle 35˚ from the horizontal. Assume air resistance is negligible. a) If the opponent doesn't hit the ball, how long will the ball be in the air? b) What is the ball's velocity at the highest point in its trajectory? c) How high will the ball go? Please show all work and steps
25. An iron ball is dropped from rest, it falls 250.9 m before hitting the ground....

25. An iron ball is dropped from rest, it falls 250.9 m before hitting the ground. What is the velocity just before it hits the ground ?

The ceiling of a building is 14.5m above the floor below. A girl hits a ball...

The ceiling of a building is 14.5m above the floor below. A girl hits a ball straight up and it just barely hit the ceiling. If her shoulders are 1.75m above the ground and she hit the ball at shoulder height, what was the [vector] velocity of the ball just after it was hit? Air resistance can be ignored