You are walking on a bridge and accidentally drop your cell phone. If the bridge is 61.3 m above the water, how long does it take the phone to hit the water?A.1.88 sB.6.26 sC.2.22 sD.3.54 sSUBMITarrow_backPREVIOUS
Question
You are walking on a bridge and accidentally drop your cell phone. If the bridge is 61.3 m above the water, how long does it take the phone to hit the water?A.1.88 sB.6.26 sC.2.22 sD.3.54 sSUBMITarrow_backPREVIOUS
Solution
To solve this problem, we can use the physics formula for the distance an object falls due to gravity, which is d = 0.5gt^2, where d is the distance, g is the acceleration due to gravity (9.8 m/s^2 on Earth), and t is the time.
We can rearrange this formula to solve for time: t = sqrt(d / 0.5g)
Substituting the given values: t = sqrt(61.3 / 0.5*9.8)
This gives us t = sqrt(61.3 / 4.9) = sqrt(12.51) = 3.54 seconds.
So, the correct answer is D. 3.54 s.
Similar Questions
You are standing on the shore by a creek skipping rocks across the water. The rock skips off the water at an angle of 6.00° and at a speed of 2.00 m/s. How far does the rock travel before it next hits the water? 0.0849 m 0.812 m 0.00892 m 4.87 m
A student drops an object from the top of a building 19.6 meters from the ground. How long does it take the object to fall to the ground?A 2.00 secondsB 3.00 secondsC 4.00 secondsD 19.6 seconds
A man standing on a bridge throws a stone horizontally with a horizontal velocity of 20 m/s. The stone hits the water below 3 s later. The height of the bridge is closest to?Question 9Answera. 20 m highb.45 m highc.50 m highd.60 m highe.20 m high
1. A man walking at the rate of 5 km/hr. crosses a bridge in 15 minutes. The length of the bridge (in metres) is ?600 750 1000 1250
A body is projected downward at an angle of 30° to the horizontal with a velocity of 9.8 m/s from the top of a tower 29.4 m high. How long will it take before striking the ground?A 2 s B 5 s C 8 s D 10 s
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.