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Q: Why control surfaces at tails of airplanes become in effective at high speeds? what is the need of…

A: Control surfaces at tails of airplanes becomes in effective at low pressure and high speed because…

Q: A 500-gram ball is rolling to the right with a velocity of 10 m/s, and a 400-gram ball is rolling to…

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Q: hich of the following objects has the greatest momentum a. A 0.4 kg object rolling at 2 m/s b. A…

A: Asmomentum (p)=mass×velocitythusa.p=0.4 kg×2 m/s  =0.8 kg m/sb.p=0.50 kg×2 m/s  =1 kg m/s

Q: I. A piece of crumpled paper and a feather hit the ground at the same time II. Flight time depends…

A: Answer  option(B) I and III

Q: A golfer hits a 45 grams golf ball from the fairway with initial velocity 36m/s it lands on the…

A: The work done by all the forces is equal to the change in the energy of the system. Kinetic energy =…

Q: 1) A marble launcher fires a marble at an angle of 50° to the horizontal with an initial velocity of…

A: Answer:-  Given  Initial velocity (u) = 6.2 m/s  Angle (A) = 50o  Acceleration due to gravity (g) =…

Q: 10.) The graph to the right shows the force on a ball exerted by a wall. The 0.5 kg ball is…

A: "Since you have posted multiple question in single window  without indicating question number to…

Q: 16. A mass of 100 g strikes the wall with speed 5 m/s at an angle as shown in the figure and it…

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Q: Two balls A and B are pushed horizontally from a surface of height 11.27 meters. Ball A is pushed so…

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Q: .A 0.04-kg ball is thrown at 20m/s from the top of a 30-m tall building (point A) at an unknown…

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Q: 2.) A 20-kg satellite is traveling in space at v. = 62 m/s along a straight trajectory (call this…

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Q: For the same force, a long cannon imparts a greater impulse to a cannonball than a short cannon…

A: Impulse is equal to the change in momentum. The expression for the impulse is given by : J=F∆t where…

Q: Two balls of equal mass and of perfectly elastic material are lying on the floor. One of t the…

A: Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the the…

Q: If the speed of an object doubles, the momentum and kinetic energy A. momentum doubles and kinetic…

A: Write the expressions for the momentum and the kinetic energy, respectively.

Q: 2.) A 20-kg satellite is traveling in space along a straight trajectory (call this your x- axis). It…

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Q: Conceptual question: Someone claims that a car doubling its speed (say from 30 mph to 60 mnh) thot…

A: Given:-  The speed of the car vi = 30 mph = 13.412 m/s  The speed of the car vf = 60 mph = 26.82 m/s…

Q: A 2 KG bag is thrown at a Velocity of 42m/s to a 82kg person who is at rest in the frictionless…

A: Given : mass of bag, m1 = 2 kg mass of person, m2 = 82 kg initial velocity of bag, u1 = 42 m/s…

Q: Q4. A man throws a 0.2 kg ball horizontally towards a wall. The ball leaves the man's hands with a…

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Q: Compare the momentum of a 2 kg cart moving at 10 m/s (to the right) with that of a 4 kg cart moving…

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Q: a person hits a 45 g golf ball. the ball comes down on a tree root and bounces straight  up with an…

A: Write the given values with the suitable variables. m=45 g=0.045 kgu=14 m/s Here, m is the mass and…

Q: 3. When a falling object bounces, as it hits the ground its change in momentum and the impulse on it…

A: According to Newton's second law , the force on an object is the rate of change of its momentum…

Q: Question 5 What velocity would a 4 kg ball need to have a KE = 234? %3D Round your answer to the…

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Q: 1.) Initially at rest, a sphere which is 5 lb is released to swing down at an angle of θA = 60o…

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Q: A small car with mass 800 kg travels at 30 m/s. It collides head-on with a large semi-trucl with…

A: Given : Mass of a car (m) = 800 kg Initial speed of a car (v1i) = 30 m/s Mass of a truck (M) = 32000…

Q: before and after are given, and no other unbalanced forces act on these blocks. The collision is 8)…

A: Disclaimer: “Since you have asked multiple question, we will solve the first question for you. If…

Q: Suppose your hand moves upwards by 0.5 m to toss a 0.145 kg baseball straight upward so that it…

A: Given data; The mass of the baseball is m=0.145 kg The displacement of the hand is d=0.5 m The…

Q: 8. The rate of change of product of mass and velocity with respect to time is defined as the: A.…

A: Product of mass and velocity is called momentum . And the rate of change of momentum with respect to…

Q: In a croquet shot a pair of touching balls are hit sharply by the mallet in the direction of the…

A: Step 1: Before both  are in rest  , so initial momentum is zero .  Step 2: Now the balls are hitted…

Q: A 5.0-kg hot rod car moving at 2.0m/s slams into a 4.0-kg hot rod car at rest. The speed of the two…

A: Given data :- mass m1 = 5 kg  and v1 = 2 m/smass m2 = 4 kg  and v2 = 0 m/s

Q: 5) Suppose you have a situation where a bowling ball of 5kg collides with a bowling pin of 2.2kg. If…

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Q: Let's try sample problem: Two balls A and B are approaching each other with velocities 5.5 m/s and…

A: The given mass of the first ball mA= 4.2 kg and the mass of the second ball is mB= 6.6 kg and their…

Q: A spherical ball of mass 20kg is stationary at the top of a hill of height 100m. It rolls down a…

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Q: After the test, Janet looks at the data and decides to do the test again. What best explains why she…

A: Required : Why should Janet do the test again.

Q: What is not a vector quantity?  1.energy 2.weight 3.momentum 4.impulse

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Q: A 500 gram cart rolls with negligible Fashion along a straight flight track at 2.5 m/s until it…

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Q: golf club exerts an average horizontal force of 1000 N on a 0.045-kg golf ball that is initially at…

A: Given data  F = 1000 N, m = 0.045-kg, vo = 0, t = 1.8 ms.

Q: ) In a perfectly elastic collision, momentum and kinetic energy of both colliding objects: a.…

A: In elastic collision momentum & kinetic energy both are conserved.  So both momentum &…

Q: A 0.05 kg ball hits a tennis player with a horizontal speed of 30 m/s, and this player sends the…

A: Given  Mass of ball m=0.05 kg  Initial velocity u=-30i m/s Final velocity v=25i m/s

Q: What are factors that will affect high jump performance? Select an answer and submit. For keyboard…

A: High jump is an athletics event that requires the athlete to clear a horizontal bar placed at a…

Q: A projectile is fired at v0=433.0 m/s at an angle of 71.4, with respect to the horizontal. Assume…

A: Given Vo= 433 m/s  Angle (theta) = (71.4)o acceleration due to gravity = 9.8. m/s2 We know that R =…

Q: A ball of 150 g mass moves with 12 m/s and bounces back after hitting a wall with 20 m/s after a…

A: Given that:-Mass, m=150 g=0.15 kgInitial velocity, u=12 m/sFinal velocity, v=20 m/sTime taken=0.01…