9. One species of eucalyptus tree, Eucalyptus regnens, grows to heights similar to those attained by California redwoods. Suppose a bird sitting on top of one specimen of eucalyptus tree drops a nut. If the speed of the falling nut at the moment it is 75 m above the ground is 52 m/s, how tall is the tree?

9. One species of eucalyptus tree, Eucalyptus regnens, grows to heights similar to those attained by California redwoods. Suppose a bird sitting on top of one specimen of eucalyptus tree drops a nut. If the speed of the falling nut at the moment it is 75 m above the ground is 52 m/s, how tall is the tree?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter2: Kinematics

Section: Chapter Questions

Problem 43PE: A basketball referee tosses the ball straight up for the starting tip-off. At what velocity must a...

See similar textbooks

Similar questions

An arrow is shot straight up in the air at an initial speed of 15.0 m/s. After how much time is the arrow heading downward at a speed of 8.00 m/s? (See Section 2.6.)
An aging coyote cannot run fast enough to catch a road-runner. He purchases on eBay a set of jet-powered roller skates, which provide a constant horizontal acceleration of 15.0 m/s2 (Fig. P1.78). The coyote starts at rest 70.0 in from the edge of a cliff at the instant the roadrunner zips past in the direction of the cliff, (a) Determine the minimum constant speed the roadrunner must have to reach the cliff before the coyote. At the edge of the cliff', the roadrunner escapes by making a sudden turn, while the coyote continues straight ahead. The coyotes skates remain horizontal and continue to operate while he is in flight, so his acceleration while in the air ss (15.0 - 9.80j) m/s2, (b) The cliff is 100 m above the flat floor of the desert. Determine how far from the base of the vertical cliff the coyote lands, (c) Determine the components of the coyotes impact velocity.
10 - A ball is launched from a height of 30 m downwards with an initial velocity of 15 m / s. After how many seconds does it hit the ground?A) 4.44B) 3C) 1.25D) 1.38E) 2
11 - A ball is launched from a height of 30 m upwards with an initial velocity of 15 m / sec. After how many seconds does it hit the ground?A) 4.44B) 3C) 1.25D) 1.38E) 2,5
1. A student throws a ball up in the air with an initial velocity of 392m/s. How high does the ball travel in the air before it begins to fall to the ground?
3- Assume that an intercontinental ballistic missile goes from rest to a suborbital speed of 6.50 km/s in 60.0 s. What is its average acceleration in m/s2 ?
2. For the winter, a duck flies 10.0 m/s due south against a gust of wind with a speed of 2.5 m/s. What is the resultant velocity of the duck?
1. What maximum height, in meters, will be reached by a stone thrown vertically straight upward if it has initial speed of 18.65? 2. A brick was dropped from rest from a height of 16.8 m. How long does it take the brick to reach the ground (in seconds) ? note: Use acceleration due to gravity, g = 9.81 m/s2. 3. A car, starting from rest, accelerates in a straight-line path at a constant rate of 3.07 m/s2. How far will the car travel in 38.5 seconds? 4. A projectile is thrown from (##) = 8.1 meters above the ground. With initial velocity of 30 m/s and 20 degrees above the horizontal. Find the horizontal displacement, x. 5. A bird flew 641 km from Cebu to Manila with an average speed of 32.2 m/s. How long, in hours, did it take the bird to make this journey?
Give an example in which velocity is zero yet acceleration is not.
A swan on a lake gets airborne by flapping its wings and running on top of the water. (a) If the swan must reach a velocity of 6.00 m/s2, to take off and it accelerates from rest at an average rate of 0.350 m/s2, how far will it travel before becoming airborne? (b) How long does this take?
To pass a physical education class at a university, a student must run 1.0 mi in 12 min. After running for 10 min, she still has 500 yd to go. If her maximum acceleration is 0.15 m/s2, can she make it? If the answer is no, determine what acceleration she would need to be successful.
A basketball referee tosses the ball straight up for the starting tip-off. At what velocity must a basketball player leave the ground to rise 1.25 m above the floor in an attempt to get the ball?