While skydiving, a brilliant young physics student known affectionately as “Crazy Kaitlin” launches herself horizontally out of an airplane. The plane is flying steadily at 12,500 feet above the Earth with a horizontal speed of 80 miles per hour. The total mass of Kaitlin and her gear is 75-kg. Assume g = -9.8 m/s2 While free-falling, Kaitlin engages in some aerial acrobatics. At one point, she finds herself rapidly spinning about an axis that runs from her head to her feet. If she wants to quickly decrease her rate of spin, the optimum way for her to this is: A) Cup her hands and claw wildly at the air B) Use counter-flagellation forces C) Fold her arms tightly across her chest to decrease her moment of Inertia. D) Stretch her arms and legs as far outward as possible to increase her moment of Inertia

Q: The total force on an object is ( 20 ı ^ + 40 ȷ ^ ) Newtons.  Its acceleration is ( 4 ı ^ + 8 ȷ ^ )…

A: The magnitude of the total force is: The magnitude of the acceleration of the object is:

Q: A 1,959-kg car starts from rest at the top of a driveway 7.26 m long that is sloped at an angle of…

A: Given data: The mass, m=1959 kg The distance is d = 7.26 m The angle is θ=21° The force is F=2338 N…

Q: Cönsider a 100 kg box which is at the rest. Now, two forces are applied to the box and it starts to…

A:

Q: As a fish jumps vertically out of the water, assume that only two significant forces act on it: an…

A:

Q: football match, a player kicked 400 grams of football with a speed of 70 miles per hour at an angle…

A: Given:-  The mass of the football m = 400 g = 0.4 kg  The speed of the mass is v = 70 miles/ hour =…

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

A:

Q: An electron is a subatomic particle (m = 9.11 x 10*31 kg) that is subject to electric forces. An…

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: A 4.5-kg object is dropped vertically (with zero horizontal speed) from a tall building with an…

A:

Q: 4.3. Someone drops a rock from a bridge. ou can neglect air friction as you answer the following:…

A: using,       for t= 0.5 s        for t = 1.0 s         for t = 2.0 s

Q: Komi was on vacation and went to scale Mt. Banahaw. Her weight at the base of the mountain is 540 N;…

A: Given weight of Komi at the mountain base is Wb = 540 N and the weight of Komi at the top of the…

Q: The highest spot on Earth is Mt. Everest, which is 8850 m above sea level. If the radius of the…

A: Given thathighest spot on earth is Mt.Everest whichis at a height h=8850 m above sealevelradius of…

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

A:

Q: A 1,684-kg car starts from rest at the top of a driveway 6.3 m long that is sloped at an angle of 31…

A:

Q: The small mass m = 1.5 kg and big mass M = 12.3 kg are initially at rest with the small mass at the…

A:

Q: Two forces F, = (55.76î – 12.93ĵ) N and F, = (27.41î - 72.94ĵ)N are exerted on a particle. The…

A: The mass of the particle is m=10.14 kg The force acting on the particles, F→1=55.76i^-12.93j^ N The…

Q: scientists are experimenting with a king of gun that may eventually be used to fire  payloads…

A:

Q: A small rocket of weight 0.3 lbs is launched vertically with thrust 3 lbs from a stand on the ground…

A:

Q: How long does it take him to reach the south shore?

A: Conservation of linear momentum According to the law of conservation of linear momentum, the linear…

Q: Two objects are dropped simultaneously from a building with a height of 15 meters. The objects weigh…

A: Two balls having two different masses are dropped from the same height. The only acceleration that…

Q: A 1,652-kg car starts from rest at the top of a driveway 7.03 m long that is sloped at an angle of…

A:

Q: Planet Roton, with a mass of 3.25 x 1024 kg and a radius of 2700 km, gravitationally attracts a…

A:

Q: A shot putter threw a 7.26-kg steel ball a horizontal distance of 17.5 meters. The shot was released…

A: horizontal distance = X = 17.5 m height = h = 2.07 m angle = 450

Q: An astronaut lands on an unknown planet. Before she can perform any of her other experiments, she…

A: A simple pendulum’s oscillation period (T) is given in terms of its length (l) and the gravitational…

Q: 7. Review. Three forces acting on an object are given by F, V (-2.00î + 2.00ĵ) N, and F, =(5.00î –…

A:

Q: A small rocket of weight 1.7 lbs is launched vertically with thrust 3 lbs from a stand on the ground…

A:

Q: A child with mass of 16.5 kg stands on the edge of a park bench and leaps into the air. Her initial…

A: The horizontal component of velocity is always constant as there is no acceleration in the…

Q: Two constant forces act on an object of mass m - 4.30 kg object moving in the xy plane as shown in…

A: Hey, since there is multiple subpart question posted, we will answer first three questions. If you…

Q: The 1.5 Mg = 1,500 kg sports car has a tractive force of F = 4.5 kN = 4,500 N. If it produces the…

A: The mass of the car, m=1500kg The tractive force, F=4500 N The velocity of the car, v=-0.05t2+3t m/s

Q: The acceleration of a particle moving along the 7. x-axis is given by the function a, = -7 ť + 4 t*…

A:

Q: ks) (a) Calculate the net acceleration of a space shuttle and rockets at the time of liftoff. (b)…

A: Given   force produced during the lift of on shuttle and rocket F = 1.7 × 107 N Mass of shuttle and…

Q: On Mars, a ball is rolling from a ground to a hill, and we know the height of the hill, Z, is 10 m,…

A: The total energy of any object consists of its kinetic energy and its potential energy.  Kinetic…

Q: A cart with mass 15.7 kg is intitally at rest. You get it moving by pushing on the cart at an angle…

A:

Q: A golf ball is launched into the air at an angle. Its horizontal speed is 30 m/s and its vertical…

A: Given data:  Ball is launched into the air at an angle Horizontal speed (ux) = 30 m/s Vertical speed…

Q: Sam, whose mass is 74.0 kg, takes off across level snow on his jet-powered skis. The skis have a…

A: Given:- The mass of the sam is m =74.0 kg  The skis have a thrust force of Fth = 220.0 N  The…

Q: A constant retarding force of 50 N is applied to a body of mass 20 kg moving initially with a speed…

A:

Q: A golf ball (m = 67.8 g) is hit by a clab that makes an angle of 25.1° with the horizontal. The ball…

A: Given: The mass of the ball is m=67.8 g. The angle of flight is θ=25.10. The horizontal range (total…

Q: You are trying to escape a hoard of zombies and must make an elevator to get down a cliff as fast as…

A: vmax = 10 m/s h = 25 m acceleration (a) = 2 ms2m2 = 100 kg

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

A:

Q: The small mass m = 3.5 kg and big mass M = 5.8 kg are initially at rest with the small mass at the…

A: The law of conservation of energy states that the total energy of an isolated system shall remain…

Q: A small object is initially at rest at the top of a large solid sphere that is fixed on the ground.…

A:

Q: A bird flying at 45 m/s, 100 m above sea level, drops an acorn of 1 kg upon his unsuspecting victims…

A:

Q: Let's say an astronaut is walking on the moon and wants to test out some basic kinematics. Because…

A: Given : Mass of Hammer , m = 10 Kg Height , h = 1.65 m Gravity on moon , g = 9.8/6 m/s2 g = 1.63 m/s…

Q: . In the movie The Rocketeer, a teenager discovers a jet-powered backpack in an old barn. The…

A: This movie scene is a bad example in the sense of physics.