spring with an elastic constant of 200 N / m is compressed horizontally by 10 cm with a 200 g ball resting against its free end. The ball is released from rest, travels a horizontal surface without friction and jumps into the air. Find its speed v when it has descended 80 cm through the air. Neglect friction with

Q: Problem 6: A toy car of mass 0.1 kg is propelled by a compressed spring that gets it moving with an…

A: given - initial velocity of car, vi= 2m/secmass of the car,m = 0.1kgheight,h= 0.18m

Q: A block of mass m = 2.8 kg is dropped (starting from rest) from a height h = 0.81 meters above the…

A: Consider the top of the spring as the reference line. Apply principle of conservation of energy…

Q: a Consider system consisting three masses on the x axis. Mass m1=1.00 kg is at =1.00 m ; mass m2 =…

A: Given: mass 1= 1kg mass 2= 2kg mass 3 = 3kg taking reference from origin position of mass 1= R1= 1m…

Q: A 60.0-kg projec where the ground is taken to be y = 0. (a) What is the initial total mechanical…

A: Given: A 60 kg projectile is fired at an angle 300 above the horizontal with an initial speed of 144…

Q: A 5.9 x 10^5 kg United Launch Alliance (ULA) rocket is fired vertically from Cape Canaveral. The…

A: We can use the conservation of energy principle to determine the rocket's height after the first…

Q: A vertically mounted spring (k = 850 N/m) is compressed by 24.0 cm relative to its unstrained…

A:

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 pogo stick has a spring with a force constant of 2.50 × 104 N/m , which can be compressed 10.4 cm.…

A: M= 38 kg  K= 2.5× 104 N/m  x= 10.4 cm = 0.104 m

Q: A car with a mass of 878 kg is traveling in the positive x-direction. At a certain moment, the car…

A:

Q: A ball of mass m = 1.75 kg is released from rest at a height h 57.0 cm above a light vertical spring…

A: mass, m = 1.75 kg  height, h = 57 cm compression, d = 9.4 cm

Q: A pogo stick has a spring with a force constant of 2.50 × 104 N/m , which can be compressed 11.2 cm.…

A: Initially, the energy stored in the compressed spring is:

Q: We are preparing to project a rubber arrow with a mass of 7.8 g with a toy using a compression…

A: Given: The mass of the arrow is 7.8 g. The spring constant is 3.5x102N/m. The compression in the…

Q: An elevator has mass 775 kg, not including passengers. The elevator is designed to ascend, at…

A:

Q: A 12.0 kg bowling ball (solid sphere) is rolling along a track at 2.7m/s. It then rolls up a ramp…

A:

Q: A center hurls a basketball m = 1 kg straight up with an initial speed of v0 = 7.5 m/s. He releases…

A:

Q: A block of mass 15.0 kg slides from rest down a frictionless 40.0° incline and is stopped by a…

A: Given:Mass of the block, m = 15 kgInclination of the plane = 40 degreesSpring constant, k = 3.4 ×104…

Q: In the figure, a block of mass m = 3.30 kg slides from rest a distance d down a frictionless incline…

A: Mass (m) = 3.3kg   θ = 35.0 ˚ ( Angle of inclination)   Spring constant (k)= 450N/m  Compression (x)…

Q: A particle of mass m moves under the influence of a potential energy U(x)=a/x+bx where a and b are…

A: Given: Potential energy U(x)=ax+bx

Q: A 43-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the…

A: Given- Mass of girl m=43 kg Initial kinetic energy  KEinitial=490 JKEfinal=250 J

Q: (c) What is the speed of the projectile immediately before it hits the ground if air friction does…

A: C) As per the work-energy theorem, the friction’s work done can be represented as, Here, E, m, v,…

Q: A ball of mass m = 60 g is shot with speed vi= 7.7 m/s into the barrel of a spring gun of mass M =…

A:

Q: Maria sets up a simple track for her toy block (m = 0.26 kg) as shown in the figure below. She holds…

A:

Q: A block of mass m - 2.65 kg slides along a horizontal table with speed = 9.00 m/s. At x = 0, it hits…

A:

Q: A block on a horizontal spring slides along a horizontal frictionless surface. The mass of the black…

A: The mass of the block is given as .The spring constant of the block is The block is stretched a…

Q: 9. A vertically mounted spring (k = 850 N/m) is compressed by 30.0 cm relative to its unstrained…

A:

Q: 40-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the…

A:

Q: A block of mass m = 0.26 kg slides with initial velocity vo m/s along a frictionless surface (as in…

A:

Q: A spring is compressed a distance of 15 cm by a 675 g ball. The spring constant is 225 N/M. The ball…

A: Given: x=15cm =0.15mm=675g=0.675kgk=225N/mμ=0.18l=20cm=0.2mh1=1.7mh2=1m

Q: Imagine a country side region with several smooth hills.  A  mass m  slides over these hills on a…

A:

Q: A small anvil of mass, m= 10 kg is dropped from rest from a height H= 7.0 m above the top of a…

A: Given A small anvil of mass (m)           = 10 kg The height it from dropped (H) = 7.0 m The spring…

Q: A ball of mass m = 60 g is shot with speed vi= 7.7 m/s into the barrel of a spring gun of mass M =…

A:

Q: A ball of mass m = 1.75 kg is released from rest at a height h = 57.0 cm above a light vertical…

A:

Q: A block of ice with mass 2.00 kgkg slides 0.935 mm down an inclined plane that slopes downward at an…

A: Given data: Mass of ice block is, m =2.00 kg . Sliding distance is, s =0.935 mm=0.935×10-3 m. Angle…

Q: A 2.90 kg block on a horizontal floor is attached to a horizontal spring that is initially…

A: Apply Newton’s second law at the vertical motion of the block, then

Q: A 49.5-kg athlete leaps straight up into the air from a trampoline with an initial speed of 9.1 m/s.…

A: At maximum height the velocity of the athlete will be zero. According to the conservation of energy…

Q: Consider a block of mass 0.220 kg attached to a spring of spring constant 120 N/m. The block is…

A: m = 0.220 kg K = 120 N/m x1 = 11.2 cm = 0.112 m

Q: Two pole-vaulters just clear the bar at the same height. The first lands at a speed of 8.06 m/s,…

A:

Q: A 2.0 kg mass is placed against a spring of force constant 800 N/m, which has been compressed 0.22…

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.