please help with question number 6 a=Fner/mAssessment/Homework:How much thrust must a 3.0 x 10* kg jet plane develop to achieve anacceleration of 1.5 m/s²?What acceleration will be produced by a force of 2.0 x 10 N on a 1.0 x 10° kg1.2.cart?3.Two forces are applied to a 2.0 kg block on a frictionless, horizontal surface.F, = 2.0 NF = 8.0 N2.0 kgFrictionless SurfaceWhat is the acceleration of the block?What is the magnitude of the net force acting on a 2.0 x 10° kg car as itaccelerates from rest to a speed of 15 m/s in 5.0 seconds?A man weighs 900 newtons standing on a scale in a stationary elevator. Ifsome time later the reading on the scale is 1200 newtons, describe the motionand direction of the elevator.4.5.A net force F causes mass m¡ to accelerate at rate a. A net force of 3F causesmass m2 to accelerate at rate 2a. What is the ratio of mass m to mass m2?A 0.60 kg softball initially at rest is hit with a bat. The ball is in contact withthe bat for 0.20 second and leaves the bat with a speed of 25 m/s. What is themagnitude of the average force exerted by the ball on the bat?A 1.2 x 10° kg car is accelerated uniformly from 10 m/s to 20 m/s in 5.0seconds. What is the magnitude of the net force acting on the car during this5.0 second interval?6.7.8.A net force of 5.0 x 10 newtons causes an object to accelerate at a rate of 5.0m/s. What is the mass of the object?9.

Solution of 6th Question:- Given Information:- Net force applied on mass m1 is F ,…

and direction of the elevator. A net force F causes mass m¡ to accelerate at rate a. A net force of 3F causes mass m2 to accelerate at rate 2a. What is the ratio of mass m to mass m2? A N 60 kg softball initially at rest is hit with a bat. The ball is in contact with 6. hot with a speed of 25 m/s. What is the

and direction of the elevator. A net force F causes mass m¡ to accelerate at rate a. A net force of 3F causes mass m2 to accelerate at rate 2a. What is the ratio of mass m to mass m2? A N 60 kg softball initially at rest is hit with a bat. The ball is in contact with 6. hot with a speed of 25 m/s. What is the

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter13: Gravitation

Section: Chapter Questions

Problem 23P: The mass of a particle is 15 kg. (a) What is its weight on Earth? (b) What is its weight on the...

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The gravity acceleration at a certain level is 9.78 m/s². This acceleration varies by 8.28 x 10-⁴ m/s² for every 100m ascent. a. Find the weight of an object above this level where the acceleration due to gravity is 9.70 m/s². b. Find the weight of an object relative to this point whose mass is 80 kg at a height of 10, 000 meters c. Find the height above this point if the weight of a man decreased by 5%.
Lift on an airplane is F = (P2-P1) A. The total wing area of a certain airplane is 20 square meter. Air, of density 1.2 kg/m3 , is streaming past the upper wing at 50 m/s and the lower wing at 10 m/s. What is the lift on this airplane? %3D of O a 800 N O b. 9,600N Oc 480 N Od. 16,000 N
1. A force F=100 N is acting on an object of mass m=10 kg. The force makes an angle of 10° with the x-axis. Calculate the acceleration of the 9.85 m/s 8.69 m/s object. A в 7.52 m/s D 6.34 m/s 2. A 1000 kg object is rising. Its speed is increasing at 3 m/s. The force on the object is: A 1000 N B 3000 N 9800 N D 12800 N 3. A 16 kg object is initially at rest. A constant force of 8.0 N is exerted for 4 s on that object. The change in speed of this object will be 2.0 m/s 6.0 m/s 0.5 m/s 4.0 m/s A B D
A 400-N body starts up the incline of 30o with the horizontal (fk = 0.2) with a velocity of 3m/s. a. How long must a 500-N horizontal force act on the body to increase its velocity to 8m/s? b. How far will the body travel while the force is acting?
1. You are tasked with designing the runway on an aircraft carrier. The minimum speed for the F/A18 Hornet is 200 mph. The Hornet weighs 40,000 lbf and its twin engines provide a thrust of ~40,000 lbf combined, providing a max acceleration of 1g.a. How long must the deck be to takeoff unassisted? Give the answer in ft. b. This is most likely longer than your typical ~450 ft carrier. What acceleration must you achieve with both the engines and with a catapult system together to reach the required minimum speed by the end of the deck? c. What net force (combined engines and catapult) must be applied to the plane to get the acceleration in b? d. Do you think the plane will be able to use disk brakes on its tires to stop when landing?Use your knowledge of friction to make your argument. Also know that their coefficient of friction is ~1.
1. The acceleration due to gravity at a certain level is 9.78 m/s?. This acceleration varies by 8.28 x 10 *4 m/s2 for every 100 m ascent. a. Find the height of an object above this level where the acceleration due to gravity is 9.70 m/s?. b. Find the weight of an object relative to this point whose mass is 80 kg at a height of 10,000 meters.
A bicyclist can coast down a 9.0 ∘ hill at a steady 8.5 km/h .The mass of the cyclist plus bicycle is 85.0 kg . If the drag force is proportional to the square of the speed v, so that FD=−cv2. a. Calculate the value of the constant c. b. Calculate the average force that must be applied in order to descend the hill at 27 km/h . Ignore other types of friction.
9. Consider the falling object of mass 10 kg in Example 2, but assume now that the drag force is proportional to the square of the velocity. a. If the limiting velocity is 49 m/s (the same as in Example 2), show that the equation of motion can be written as 1 (49² - 1²). 245 dy dt Also see Problem 21 of Section 1.1. b. If y(0) = 0, find an expression for v(t) at any time. Gc. Plot your solution from part b and the solution (26) from Example 2 on the same axes. d. Based on your plots in part c, compare the effect of a quadratic drag force with that of a linear drag force. e. Find the distance x(t) that the object falls in time t. Nf. Find the time T it takes the object to fall 300 m.
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21. A child pushes a 315 g toy truck across a horizontal rough surface. (coefficient of kinetic friction, ux = 0.73). a. Draw a formal free-body diagram of the toy truck if it is being pushed horizontally to the right. b. What total force must the child apply to push the truck at a constant speed? 22. A 1600 g tool is thrown at 15.0 m/s, 40° above the horizontal from the top of an 80.0 m building under construction. How long does it take to hit the ground? Draw a vector diagram
Wing Loading of = 570 N/m² Co = 0.06 +0.0150₂² The glider was launched at 500 meters altitude. Calculate for mimimum rate of descent in meters per second. (Round off answer with two decimal places, No units, No commas) Answer given: 23554 Which is not true about the effect of altitude? A. Points with the same value of a therefore must have the same glide path angle. B. The drag polar changes with flight speed. C. The glide path angle is independent of altitude and depends solely on the angle of attack.
Two forces act on a 2.90 kg object, the gravitational force and a second, constant force. The object starts from rest and in 1.20 s is displaced (4.10 3.30ĵ) m. Write the second force in unit vector notation. (Enter your answer in kg. m/s². Assume the gravitational force acts in the -ĵ direction.) kg. m/s² F