A soccer player at 40 m/s and 49 degrees above the horizontal What is the hang time Range And max height| The second one was like a car runs off the edge of a table that is 3m High and lands at 2m from the table Ahah is the time it took to fall, what was the speed before it fell off the edge, and the speed it went in the horizontal direction before it reached the ground

A soccer player at 40 m/s and 49 degrees above the horizontal What is the hang time Range And max height| The second one was like a car runs off the edge of a table that is 3m High and lands at 2m from the table Ahah is the time it took to fall, what was the speed before it fell off the edge, and the speed it went in the horizontal direction before it reached the ground

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter4: Motion In Two And Three Dimensions

Section: Chapter Questions

Problem 36P: An airplane flying horizontally with a speed of 500 km/h at a height of 800 m drops a crate of...

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A tennis player hits a ball 2.5 m above the ground. The ball leaves his racquet with a horizonatl speed of 10 m/s. The horizontal distance to the net is 5.0 m and the net is 1 meter tall. A) how high is the ball above the net when it passes over the net? B) Find the horizontal speed and vertical speed of the ball when it passes over the net.
A basketball player shoots toward a basket 6.1 m ay and 3.0 m above the floor. If the ball is released 1.8 m above the floor at an angle of 60 above the horizontal, what must the initial speed be if it were to go through the basket?
A car is parked on a steep incline, making an angle of 37.0 below the horizontal and overlooking the ocean when its brakes fail and it begins to roll. Starting from rest at t = 0, the car rolls down the incline with a constant acceleration of 4.00 m/s2, traveling 50.0 m to the edge of a vertical cliff. The cliff is 30.0 m above the ocean. Find (a) the speed of the car when it reaches the edge of the dill, (b) the time interval elapsed when it at rives there. (c) the velocity of the car when it lands in the ocean, (d) the total time interval the cat is in motion, and (e) the position of the car when it lands in the ocean, relative to the base of the cliff.
An airplane flying horizontally with a speed of 500 km/h at a height of 800 m drops a crate of supplies (see the following figure). If the parachute fails to open, how far in front of the release point does the crate hit the ground?
In the blizzard of ’88, a rancher was forced to drop hay bales from an airplane to feed her cattle. The plane flew horizontally at 160 km/hr and dropped the bales from a height of 80 m above the flat range, (a) She wanted the bales of hay to land 30 m behind the cattle so as to not hit them. Where should she push the bales out of the airplane? (b) To not hit the cattle, what is the largest time error she could make while pushing the bales out of the airplane? Ignore air resistance.
Suppose you throw a rock nearly straight up at a coconut in a palm tree and the rock just misses the coconut on the way up but hits the coconut on the way down. Neglecting air resistance and the slight horizontal variation in motion to account for the hit and miss of the coconut, how does the speed of the rock when it hits the coconut on the way down compare with what it would have been if it had hit the coconut on the way up? Is it more likely to dislodge the coconut on the way up or down? Explain.
Aaron Rodgers throws a football at 20.0 m/s to his wide receiver, who runs straight down the field at 9.4 m/s for 20.0 m. If Aaron throws the football when the wide receiver has reached 10.0 m, what angle does Aaron have to launch the ball so the receiver catches it at the 20.0 m mark?
You drive 7.50 km in a straight line in a direction 15 east of north. (a) Find the distance you would have to drive straight east and then straight north to arrive at the same point. (b) Show that you still arrive at the some point if the east and north legs are reversed in order. Assume the +x -axis is to the east.
Calculate the displacement and velocity at times of (a) 0.500 s, (b) 1.00 s, (c) 1.50 s. (d) 2.00 s, and (e) 2.50 s for a rock thro straight down with an initial velocity of 14.0 m/s from the Verrazano Narrows Bridge in New York City. The roadway of this bridge is 70.0 m above the water.
Can a goalkeeper at her/ his goal kick a soccer ball into the opponent's goal without the ball touching the ground? The distance will be about 95 m. A goalkeeper can give the ball a speed of 30 m/s.
Mike Powell holds the record for the long jump of 8.95 m, established in 1991. If he left the ground at an angle of 15 . What was his initial speed?
Check Your Understanding If the two golf shots in Example 4.9 were bunched at the same speed, which shot would have the greatest range? When we speak of the range of a projectile on level ground, we assume R is very small compared with the circumference of Earth. If, however, the range is large, Earth curves away below the projectile and the acceleration resulting from gravity changes direction along the path. The range is larger than predicted by the range equation given earlier because the projectile has father to fail than it would on level ground, as shown in Figure 4.17, which is based on a drawing in Newton’s Principia. If the initial speed is great enough, the projectile goes into orbit. Earth’s surface drops every 8000 m. In 1 s an object falls 5 m without a resistance. Thus, if an object is given a horizontal velocity of 8000 m/s (or 18,000 mi/hr) near Earth’s surface, it will go into orbit around the planet because, the surface continuously falls away from object Thu is roughly the speed of the Space Shuttle in a low Earth orbit when it was operational, or any satellite in a low Earth orbit. These and other aspects of orbital motion, such as Earth’s rotation, are covered in greater depth in Gravitation. Figure 4.17 Projectile to satellite. In each case shown here, a projectile is launched from a very high tower to avoid air resistance. With increasing initial speed, the range increases and becomes longer than t would be on level ground because Earth curves away beneath its path. With a speed of 8000 m/s, orbit is achieved.