A jet plane lands with initial speed of 100 m/s and comes to rest after 23 s, what was its acceleration (in m/s2) Select one: a. -77 b. 4.35 c. 77 d. -4.35
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A: Given data: Initial velocity (Vi) = 81 km/h Acceleration (a) = - 0.7 m/s2 Time (t) = 10 seconds
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A: height (h) = 35 m depth (d) = 0.5 m
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A: The given data are: h=12.8 mu=0 m/s Here, h and u are the height and initial velocity.
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A: This question is based on kinematics and motion under gravity.
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A: We'll use the Newton's equation of motion v=u+at
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A: To determine: The correct option.
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- 1. A pitcher throws a baseball with mass 0.2 kg straight upward with an initial speed of 20.0 m/s. Calculate the speed (in m/s) of the baseball at a height of 15.0 m above the pitcher’s hand.What would be the final velocity if a 600g Cart 1, initially traveling 5.80m/s collided with a 200g Cart 2?An ice sled powered by a rocket engine sum from rest on a large frozen lake and accelerates at + 40 ft/s2. After some time t1, the rocket engine is shut down and the sled moves with constant velocity v for a time t2. If the total distance traveled by the sled is 17 500 ft and the total time is 90 s. find (a) the times t1 and t2 and (b) the velocity v. At the 17 500-ft mark, the sled begins to accelerate at 20 ft/s2. (c) What is the final position of the sled when it comes to rest? (d) How long does it take to come to rest?
- 1.supposed that the body with 2 kg has an initial velocity of 10m/s and is then pulled 4 meters by a force of magnitude 25N in the direction of the initial velocity, what is its final velocity?A bullet in a gun is accelerated from rest from the firing chamber to the end of the barrel at an average rate of 6.25 × 105 m/s2 for 8.3 × 10-4 s. What is the gun’s muzzle velocity (that is, the bullet’s final speed), in meters per second?You’re driving in your car at 60 mph when Bambi steps out right in front of you and freezes. You slam on the brakes decelerating at a rate of 0.5 g (-4.9 M/S). How far and how long will it take for the car to come to a stop?
- My sable-colored Siberian husky, Samba, loves to run after huge objects (for instance, tree branches). I decide to chunk a 6 foot long stick for her to run after and bring back to me. I throw the stick at 1.06 ft/s in 2.47 s. In feet and to two decimal places, how far away did the stick land?A student who aspires to ace his quiz in Phys134 went to a wishing well. He dropped his first 10-peso coin and made a quick wish. Two seconds after he dropped his first coin, he threw another 10-peso coin vertically downward with a speed of 30m/s. How long will it take the second coin to overtake the first?4. You drop a ball from a height of 100 metres. Each time it bounces 70% of the previous height. a. Write a rule for the height of the ball after the ??th bounce.b. Find the total vertical distance of the ball has travelled when it hits the ground for the7th time? (Answer in 2 decimal places if applicable)
- A rock is dropped from the top of the building ? Rock starts from rest and it takes 7seconds to reach the ground . How far did the rock travel in 7 seconds ? (G=9.8m/s^2jAn apple falls from a tree. It hits the ground at a speed of about 5.0m/s5.0m/s. What is the approximate height of the tree? 10.0 m 2.4 m 2.5 m 1.3 mA tennis ball with a speed of 13m/s is moving perpendicular to a wall. After striking the wall,the ball rebounds in the opposite direction with the speed of 7.839m/s. If the ball is in contact with the wall foe 0.0113s,what is the average acceleration of the ball while it is in contact with the wall? Take toward the wall to be the positive direction. Answer in units of m/s*2