0

# A marble dropped from a bridge strikes the water in 5 seconds. What is the speed with which it strikes and the height of the bridge?

Updated: 9/13/2023

Wiki User

6y ago

Velocity final = vi + at = 49 m/s

displacement = vi * t + ½2at² = 122.5 m

vi = 0

a ≈ 9.8

t = 5

Wiki User

6y ago

Earn +20 pts
Q: A marble dropped from a bridge strikes the water in 5 seconds. What is the speed with which it strikes and the height of the bridge?
Submit
Still have questions?
Related questions

### A marble is dropped from a bridge and strikes the water in 5 seconds Calculate the speed with which it strikes and the height of the bridge?

The initial velocity of the marble is 0 m/s (dropped). Using the equation for free fall: h = 0.5 * g * t^2, where h is the height, g is the acceleration due to gravity (9.8 m/s^2), and t is time (5 seconds), we can find the height of the bridge. The speed at which the marble strikes the water can be calculated using the equation: v = g * t.

### A stone is dropped from a bridge and it takes 2.1 seconds to hit the ground How high is the bridge?

Assuming the stone was dropped from rest, we can calculate the height of the bridge using the kinematic equation: h = 0.5 * g * t^2, where h is the height of the bridge, g is the acceleration due to gravity (9.8 m/s^2), and t is the time of fall (2.1 seconds). Plugging in the values, we get h = 0.5 * 9.8 * (2.1)^2 = 22.33 meters. Therefore, the height of the bridge is approximately 22.33 meters.

### A marble is dropped from a bridge and strikes the water in 5 seconds Calculate the speed with which it strikes and the height of the?

Neglecting air resistance . . .The acceleration of gravity is 9.8 meters (32.2 feet) per second2.After 5 seconds the marble's downward speed is (9.8 x 5) = 49 meters (160.8-ft) per second.Its average speed during the fall is (49/2) = 24.5 meters (80.4-ft) per second.The distance it falls is (24.5 x 5) = 122.5 meters (402-ft).

### If a ball takes 11 seconds to stop if dropped from 1 foot and 25 seconds from 2 feet how many seconds if dropped from 3 feet?

If we assume the time it takes for the ball to stop is directly proportional to the height it is dropped from, we can set up a proportion based on the given information. From the given data, we have the ratio of time to height as 11/1 = 25/2. Therefore, if we continue this ratio, the time it would take to stop if dropped from 3 feet would be 55 seconds.

### A rock falls off a bridge and hits the water 8 seconds later How high is the bridge?

The height of the bridge can be calculated using the formula: distance = 0.5 * acceleration due to gravity * time^2. Given that the rock takes 8 seconds to hit the water, the height of the bridge would be approximately 313.6 meters.

### What is the height of a tower if a rock dropped from it hits the ground after falling for 2 seconds?

19.6 meters / 64.4 ft

### How far does a rock fall in 9 seconds?

depends on the mass of the stone, the shape of the stone, and the height dropped from. sorry dude.

### What is the relationship between the dropped height and the rebound height of dropped bouncy balls?

The rebound height of a dropped bouncy ball is generally lower than the dropped height due to energy losses from deformation and air resistance. However, for ideal elastic collisions, the rebound height is approximately equal to the dropped height.

### How do you find the height of the tower given only 8 seconds stone is dropped?

distance = speed x time so the distance is just the speed of the stone x 8 seconds

### a penny dropped from the top of the empire state building takes 9.2 seconds to reach the street what is the height of the building?

The height of the building at the 102nd floor is 381 metres. The penny is irrelevant.

### A penny dropped from the top of the Empire State Building takes 9.2 seconds to reach the street What is the height of the building?

The height of the building at the 102nd floor is 381 metres. The penny is irrelevant.

### If the same shoe were dropped from a height of 40m how many seconds would it take it to hit the floor?

Gravity = 9.8 meters per second