A 5.75-kg object passes through the origin attime t = 0 such that its x component of velocity is 5.00 m/s and its y component of velocity is - 3.00 m/s. (a) What is the kinetic energy of the object at this time? (b) At a later time t = 2.00 s, the particle is located at x = 8.50 m and y = 5.00 m. What constant force acted on the object during this time interval? (c) What is the speed of the particle at t 5= 2.00 s? Answer :

Q: A large cruise ship of mass 6.20 ✕ 107 kg has a speed of 12.2 m/s at some instant. (a) What is the…

A: Write the variable with the given values.

Q: At time ti, the kinetic energy of a particle is41.1 J and its potential energy is 11.9 J. Atsome…

A: The work-energy theorem gives,

Q: A 5.50-kg object is initially moving so that its x-component of velocity is 6.00 m/s and y-component…

A: Given,mass m=5.50kgvx=6m/svy=-1.90m/sv=vx2+vy2 |v|=62+(1.90)2=6.29m/s(a) kinetic energy…

Q: A 70.0-kg athlete leaps straight up into the air from a trampoline with an initial speed of 8.9 m/s.…

A: The 70 kg athlete jumps off the trampoline with an initial velocity of 8.9 m/s. The force acting on…

Q: A force acts on a particle, which is initially at rest; the force is F=(3i+4j)N. The particle is…

A: (a)The displacement of the particle is given by,…

Q: A large cruise ship of mass 6.00 ✕ 107 kg has a speed of 12.6 m/s at some instant. (a) What is the…

A: The mass of a ship is, m=6×107 kg The speed of the ship is, v=12.6 m/s (a) The kinetic energy of the…

Q: 21. A 0.600-kg particle has a speed of 2.00 m/s at point A and V kinetic energy of 7.50 J at point .…

A: Solution:-(21) Part (a):- We know , kinetic energy k = (1/2)×m×v2 Then Ka= (1/2)×0.600×(2)2 […

Q: A large cruise ship of mass 6.10 x 107 kg has a speed of 11.8 m/s at some instant. (a) What is the…

A: Given: The mass of ship is m=6.10×107 kg. The speed of the ship is v=11.8 ms. The displacement of…

Q: Suppose a car travels 108 km at a speed of 30.0 m/s, and uses 2.0 gal of gasoline. Only 30% of the…

A: Given information: The distance the car travels (d) = 108 km The speed of the car (v) = 30 m/s The…

Q: In this problem we calculate the work required for a pitcher to throw a 90-mi/h fastball by first…

A: Let mass of an object = m Let the initial velocity = voLet the final velocity = v1Let the original…

Q: A large cruise ship of mass 7.00 × 10’ kg has a speed of 10.6 m/s at some instant. (a) What is the…

A: Given, mass of ship, m=7 x 107 kg Speed at some instant, v=10.6 m/s

Q: A net force along the x-axis that has x-component Fx=−12.0N+(0.300N/m^2)x^2 is applied to a 3.80 kg…

A:

Q: A large cruise ship of mass 6.00 x 10? kg has a speed of 12.8 m/s at some instant. (a) What is the…

A: a) Let's use the kinetic energy relation in terms of mass and velocity. Ek=12mv2=12×(6.00×107…

Q: A 15.0-g bullet is accelerated from rest to a speed of 780 m/s in a rifle barrel of length 72.0 cm.…

A:

Q: In the figure, a block of mass m = 2.3 kg slides head on into a spring of spring constant k = 380…

A:

Q: A large cruise ship of mass 6.60 ✕ 107 kg has a speed of 12.8 m/s at some instant. (a) What is the…

A: a) we know that  Kinetic energy = 0.5 mV^2 Substituting values we get  KE = 5.4 x 109 J

Q: An applied force of 14.6 N acts on a 2.50 kg mass that is initially at rest. Over a distance of 2.36…

A:

Q: If a 70 kg baseball player steals home by sliding into the plate with an initial speed of 10 m/s…

A: mass of player, m = 70 kg  initial speed, u = 10 m/s  final speed, v = 0 m/s

Q: A large cruise ship of mass 6.60 ✕ 107 kg has a speed of 10.6 m/s at some instant. (a) What is the…

A: mass, m = 6.6 ✕ 107 kg speed, v =  10.6 m/s displacement, s = 2.6 km = 2600 m

Q: A 71 kg student traveling in a car with a constant velocity has a kinetic energy of 1.8 x 10^4 J.…

A: We know thatK.E=12mV2V=2(K.E)mHereV=velocity of objectK.E=kinetic energy of objectm=mass of object

Q: A 5.70-kg object is initially moving so that its x-component of velocity is 6.00 m/s and y-component…

A: Here, we have to calculate the Kinetic energy and change in kinetic energy

Q: A 11 kg object begins by moving at a speed of 2 m/s. A force of 33 N is then applied to it while the…

A:

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: 8.0-kg block is

A: 63.97 J

Q: A 0.80-kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of…

A:

Q: What is the change in kinetic energy of the mass in moving from x = 0 to 10.0 m? If the mass begins…

A:

Q: A 0.60-kg particle has  a speed of 2.00 m/s at point (A) and kinetic energy of 7.5 J at point (B).…

A:

Q: A large cruise ship of mass 6.80 ✕ 107 kg has a speed of 11.6 m/s at some instant.   (a) What is the…

A: a)Kinetic energy is,

Q: particle has a mass of 1.55 g and is moving at an average velocity of 11.5 cm/s. Calculate the…

A:

Q: A large cruise ship of mass 6.30 ✕ 107 kg has a speed of 13.0 m/s at some instant. (a) What is the…

A: Given: The mass of ship is m=6.30 ✕ 107 kg. The speed of ship is v=13.0 m/s. The displacement is…

Q: As a 2.0-kg object moves from initial position, determined with initial position vector in meters,…

A: Initially the object is at coordinate (2,5) The initial velocity of the object is 4 m/sec. From the…

Q: A 68.5-kg athlete leaps straight up into the air from a trampoline with an initial speed of 8.7 m/s.…

A:

Q: A large cruise ship of mass 6.30 x 107 kg has a speed of 11.8 m/s at some instant. (a) What is the…

A: Given: Mass of ship m=6.30×107 kg, Speed of ship v=11.8 m/s, Displacement s=3.90 km. Required: (a)…

Q: As shown in the figure below, two masses m₁ = 5.10 kg and m₂ which has a mass 60.0% that of m₁, are…

A:

Q: A sledgehammer of mass m = 1.1 kg falls freely vertically downward from a height of h = 2.8 m at an…

A: By conservation of energy mgh+1/2mv2=1/2mVf2 Also F=ma

Q: A large cruise ship of mass 6.70 ✕ 107 kg has a speed of 10.4 m/s at some instant. (a) What is the…

A:

Q: A large cruise ship of mass 7.00 ✕ 107 kg has a speed of 12.2 m/s at some instant. (a) What is the…

A:

Q: A box of mass mmm = 2.5 kg  (moving in the positive x-direction) has a velocity of 2 m/s at t = 0,…

A:

Q: A 5.42-kg object passes through the origin at time t = 0 such that its x component of velocity is…

A: (a) Write the formula for the kinetic energy of the object at the given time.  KE=12mv2 The square…

Q: A box of mass mmm = 4.5 kg  (moving in the positive x-direction) has a velocity of 2 m/s at t = 0,…

A:

Q: The figure here shows a plot of potential energy U versus position x of a 0.878 kg particle that can…

A:

Q: A 5.27-kg object passes through the origin at time t = 0 such that its x component of velocity is…

A:

Q: A large cruise ship of mass 6.00 ✕ 107 kg has a speed of 12.4 m/s at some instant. (a) What is the…

A:

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.