Anna Shcherbakova is a 2022 Beijing Olympics figure skating gold medalist for ladies’ singles. After warming up she starts her practice by skating towards the middle of the ice rink, 14 meters from the entrance. However, this time, one of her friends decided to trick her by pushing her towards the middle at a velocity of 1.2 m/s (disregard friction between the ice and her skates). Recovering from the shock 2 seconds after, she starts pushing herself forward at an acceleration of 0.5 m/s2. What velocity will she have when she reaches the middle of the rink?

Q: Consider the system of two crates shown below, which are tethered to each other by a massless…

A: Solution: given that m1 = 35 kg m2 = 60 kg L = 22 m angle = 31.7 degrees coeff of kinetic friction =…

Q: A light plane of mass 1200 kg makes an emergency landing on a short runway. With its engine off, it…

A: Given:  Mass of plane, mp= 1200 kg Mass of sandbag, ms=130 kg Initial speed of plane, vp,i=35 m/s…

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A:

Q: An 8.7 kg block slides with initials speed of 1.66 m/s across a level floor. How far does the block…

A: The equation of motion is given by,

Q: As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air…

A: Use the equation of motion to solve for the acceleration of the ball.

Q: In the figure, the coefficient of kinetic friction between the block and the surface is μ and the…

A:

Q: A projectile of mass m = 1.5 kg is fired from the origin under an angle 0 = 45° with the horizontal,…

A:

Q: The small mass m 1.4 kg and big mass M= 9.5 kg are initially at rest with the small mass at the top…

A: From conservation of momentum:

Q: Two penguins, Wheezy and Mumble, are racing down an icy slope into the water below.  Wheezy has a…

A: The coefficient of friction μ=0.12 The angle of inclination θ=80 The free body diagram of the…

Q: The high-speed winds around a tornado can drive projectiles into trees, building walls, and even…

A: Given:  m = 0.13 g = 0.13 x 10-3 kg u = 220 m/s  v = 0 m/s  d = 15 mm = 0.015 m

Q: The average thrust created by the first stage engine of a model rocket is 50N. The rocket has an…

A:

Q: What is the minimum possible value of the coefficient of static friction between the mug and the…

A:

Q: In a study conducted by an Acadia Athletic Therapy researcher, the football team was equipped for an…

A:

Q: swer b

A: Given: Uniformly charged rod has length of L Charge is Q which is along x axis

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A:

Q: A 1060 kg rocket is to be launched with an initial upward speed of 53.0 m/s. In order to assist its…

A: Given data: The mass of the rocket is m = 1660 kg The inclination angle is θ=53° The upward speed…

Q: A hockey puck is hit on a frozen lake and starts moving with a speed of 15.0 m/s. If the coefficient…

A: initial velocity, u = 15 m/s  friction coefficient, μk =  0.2  time, t = 5 s

Q: Gibbons, small Asian apes, move by brachiation, swinging below a handhold to move forward to the…

A:

Q: In this example the acceleration is caused by a friction force. A counter attendant in a diner…

A: Part(1) Given: The mass of the bottle is 0.20 kg. The velocity of the bottle is 2.8 m/s. The…

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Q: A 80.0 kg skater with the Birmingham Bulls hockey team with an initial speed of 7.8 m/s stops…

A:

Q: During an Olympic 100-m sprint race, Usain Bolt, the world record holder in that race, quickly…

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Q: A 2110 kg car traveling at 8.4 m/s collides with a 2730kg car that is initially at rest at the…

A: Mass of first car = m = 2110 kg Mass of second car = M = 2730 kg Distance traveled = s = 3.3 m…

Q: A 1.9-kg block slides down a frictionless ramp. The top of the ramp is h1= 1.9 m above the ground;…

A:

Q: A small glider is coasting horizontally when suddenly a very heavy piece of cargo falls out of the…

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Q: Leilani loads luggage into a Hawaiian Air passenger plane bound for Vegas using a conveyor belt…

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Q: A small block with mass 0.200 kg is released from rest at the top of a frictionless incline. The…

A: Given Data :m1 = 0.2 kgm1 = 0.4 kgdistance travelled by m1 in 0.2seconds is 0.508 metersinitial…

Q: ou go trick-or-treating with your friends and end up with more candy than you know what to do with.…

A: The magnitude of normal force acting on the bag  is, FN=mg-Fsinθ=8.7 kg9.8 m/s2-62 Nsin57°=33.3 N…

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A:

Q: The three blocks shown are identical. Blocks B and C are at rest when block B is hit by block A,…

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Q: The coefficient of friction between the tires of Shirley's 1985 Ford Coupe and the dry pavement is…

A:

Q: As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air…

A: Given,

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Q: Part A Suppose you push a hockey puck of mass m across frictionless ice for a time 1.0 s, starting…

A:

Q: A particle with mass 0.9 kg is pulled vertical upwards from rest by means of a cord with an…

A:

Q: As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air…

A: Given,

Q: A hockey puck (mass = 4 kg) leaves the players stick with a speed of 12 m/s and slides on the ice…

A: Deceleration  a = 0.3 × 9.8 =   2.94 m/s².

Q: As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air…

A: Ball’s acceleration is,

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A:

Q: During an Olympic 100-m sprint race, Usain Bolt, the world record holder in that race, quickly…

A:

Q: A hockey puck is hit on a frozen lake and starts moving with a velocity of 22.0 m/s. It travels…

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Q: . At the local farm, you buy a flat of strawberries and place them onthe backseat of the car. On the…

A: Strawberries placed on the back seat of a car

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: