A 0.160 kg hockey puck starts from rest and reaches a speed of 22 m/s when a hockey stick pushes on it for 1.2 m during a shot. ​(a) What is the final kinetic energy of the puck? ​(b) Determine the average net force on the puck using two different methods.

Q: An airplane of mass 1.50 x 104 kg is moving at 60.0 m/s.The pilot then increases the engine’s thrust…

A: Mass of the airplane = 1.50 X 104 kgInitial Speed of the airplane = 60 m/sThrust force = 7.50 X 104…

Q: A boy of mass 40.0 kg is sledding down a 70.0-m slope starting from rest. The slope is angled at…

A:

Q: single frictionless roller-coaster car of mass m = 750 kg tops the first hill with speed v= 15 m/s…

A:

Q: Gayle runs at a speed of 3.20 m/s and dives on a sled, initially at rest on the top of a…

A:

Q: 6. (10 ptts)The boats have masses m and 2m , and the wind exerts the same constant horizontal force…

A: Masses of two boats m1=m and m2=2m and a constant force F is exerted on both of them. They both…

Q: a)Gayle runs at a speed of 3.80 m/s and dives on a sled, initially at rest on the top of a…

A:

Q: In a railroad yard a 35,000 kg boxcar moving at 9.4 m/s is stopped by a spring-loaded bumper mounted…

A: Write the given values with the suitable variables. m=35000 kgv=9.4 m/sk=2.8 MN/m=2.8×106 N/m Here,…

Q: A freight train consists of two 9.00 ✕ 105 kg engines and 50 cars with average masses of 3.50 ✕ 105…

A: (a)   From Newton’s second law of motion, the force exerted by each engine can be determined as…

Q: A 5.52-kg object passes through the origin at time t = 0 such that its x component of velocity is…

A: (a) The formula for the resultant velocity of the object is:

Q: If the velocity of a body becomes two times its initial velocity, its kinetic energy becomes n times…

A: The kinetic energy of a body is given by : K=12mv2 Where m is the mass of the body v is the velocity…

Q: Vi=25 m/s V2=15 m/s Heeeeee g object moving in the horizontal plane hits a flexible spring with a of…

A: Given: The mass of the object is 300 g. The initial velocity of the object is 25 m/s in the positive…

Q: A projectile of mass 0.719 kg is shot straight up with an initial speed of 22.1 m/s. (a) How high…

A: Mass (m) = 0.719 kg Initial speed (u) = 22.1 ms

Q: Gayle runs at a speed of 4.70 m/s and dives on a sled, initially at rest on the top of a…

A:

Q: A net force along the x-axis that has x-component Fx = −12.0N + (0.300N/m2)x2 is applied to a 5.00…

A:

Q: 0.50 kg - = 1.5 m/s r= 0.95 m 2.0 m 1.9 m An engineer is working on a new roller coaster, and he…

A: Your answer is option (b)

Q: A 263 g ball of clay falls onto a vertical spring. The spring constant k = 2.52 N/cm.  The clay…

A: Given: mass of the ball, m=263 g=0.263 kg spring force constant, k=2.52 N/cm spring compression,…

Q: Gayle runs at a speed of 4.15 m/s and dives on a sled, initially at rest on the top of a…

A: SOlution: given that mg = 47 kg mb =30 kg ms = 5.35 kg vig  = 4.15 m/s vis=0 vi=0 yf2=-5 m yf3=-15m…

Q: A 0.90-kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of…

A: From the expression for work-energy theorem W=Fdcosθ Here, θ is the angle between the direction of…

Q: A 17 g bullet is shot vertically into an 2.00 kg block. The block lifts upward 8.0 mm (see the…

A: When there is no external force acting on particle, linear momentum is conserved. Momentum before…

Q: Gayle runs at a speed of 4.35 m/s and dives on a sled, initially at rest on the top of a…

A: Given Data Mass of Gayle=mG=50 kgMass of Gayle's brother=mGB=30 kgMass of Sled=mS=5 kgInitial…

Q: A 79 kg man lying on a surface of negligible friction shoves a 50g stone away from himself, giving…

A: Given Mass of Person is M=79 kg Mass of stone is m=50×10-3 kg Initial total momentum is pi=0

Q: It is not uncommon during the serve of a professional tennis player for the racket to exert an…

A:

Q: A projectile of mass m is fired horizontally with an initial speed of v, from a height of h above a…

A:

Q: An airplane of mass 1.50 × 104 kg is moving at 60.0 m/s. The pilot then increases the engine’s…

A: (a)   There are two forces, that are the engine’s thrust and the air’s resistive force, act on the…

Q: 0.300 kgkg glider is moving to the right on a frictionless, ­horizontal air track with a speed of…

A:

Q: A small object of mass ?=0.0250kg is moving in the positive x-axis with velocity ??=12.0m/s. What…

A: Given: Object mass m=0.0250 kg Initial velocity u=12 m/s Final velocity v=0 m/s Distance  x=15…

Q: A 5.77-kg object passes through the origin at time t = 0 such that its x component of velocity is…

A: The mass of the object is m = 5.77 kg. The x component of the velocity is vx = 5.25 m/s. The y…

Q: m/s 3 1 2 3 'y m/s 1. An object of mass of 4.0 kg is initially moving with a velocity ū, as shown.…

A:

Q: A 1000-kg jeep cruising in neutral gear at 14.00 m/s on level road approaches a gentle 10.00-meter…

A: Given:-  The mass of the jeep is m = 1000 kg  the velocity on a level of road is v = 14 m/s  The…

Q: A 15-g bullet is shot vertically into an 2-kg block. The block lifts upward 8.0 mm (see the figure).…

A: Mass of bullet  (Mbullet) =  15x10-3 kg  Mass of block  (Mblock) =  2 kg  height (h) = 8x10-3 m

Q: 0.50 kg - U, =1.5 m/s ir= 0.95 m 2.0 m 1.9 m An engineer is working on a new roller coaster, and he…

A:

Q: A 0.75 kg rocket in a fireworks display is launched from rest and follows an erratic flight path to…

A:

Q: A 3.0 kg lunchbox is sent sliding over a frictionless surface, in the positive direction of an x…

A: a) The lunchbox’s speed at t = 1s can be determined by the graph’s slope at t = 1 s. Here, x and t…

Q: An airplane of mass 1.50 × 104 kg is moving at 60.0 m/s. The pilot then increases the engine’s…

A: a. No. The change in kinetic energy of the airplane will be equal to the net work done by all the…

Q: A4.0 kg lunchbox is sent sliding over a frictionless surface, in the positive direction of an x axis…

A: Mass of lunchbox, m= 4kg

Q: *67. ssm Two joggers, Jim and Tom, are both running at a speed of 4.00 m/s (see the figure). Jim has…

A: Given: The mass of Tom is 55.0 kg. The mass of Jim is 90.0 kg. The velocity is 4.0 m/s.…

Q: Starting from rest, a 30.6 kg child rides a 8.50 kg sled down a frictionless ski slope. At the…

A: The given data are: M=30.6+8.5 kg=39.1 kgv=6.4 m/sθ=15.1° Here, M denotes the combined mass, v…

Q: A net external force is applied to a 6.85-kg object that is initially at rest. The net force…

A: Given: Mass, m = 6.85 kgThe graph between force and displacement is given.Find: Speed of the object…

Q: Q (): Ifa 3 kg ball is thrown straight up into the air with initial speed of 25 m/s, the kinetic pne…

A:

Q: A 5.22-kg object passes through the origin at time t = 0 such that its x component of velocity is…

A:

Q: During a serve, a tennis racket exerts an average force of 250 N on a 80-g tennis ball, initially at…

A: Given data:  Force (F) = 250 N Mass (m) = 0.080 g Initial velocity (Vi) = 0 m/s Time (t) = 0.005 s…

Q: Gayle runs at a speed of 4.15 m/s and dives on a sled, initially at rest on the top of a…

A: Conservation of energy is used to calculate their speed at the bottom of the hill.…

Q: A net external force is applied to a 4.51-kg object that is initially at rest. The net force…

A: Given data: Mass (m) = 4.51 kg Initial velocity (v0) = 0 m/s Displacement (s) = 20.0 m…

Q: Ballet In the figure, a 10 g bullet moving directly upward at 500 m/s strikes and becomes embedded…

A: mass of bullet, m = 10 g  mass of block, M =5 kg   initial velocity of bullet, u = 500 m/s

Q: Two blocks A (m = 3.00 Kg) and B (m = 1.00 Kg) are tied by a string via a pulley as shown in the…

A:

Q: A 1700 kg car starts up a 130 m long hill at a speed of 20.0 m/s. If the propulsive force (up the…

A: Work done by gravity  Wg = - mgh = - 1700×9.81×48.1 = -802163.7 J  Work done by propulsive force  Wp…