A 146-g baseball is dropped from a tree 15.0 m above the ground. With what speed would it hit the ground if air resistance could be ignored? Next, if it actually hits the ground with a speed of 9.00 m/s, what is the magnitude of the average force of air resistance exerted on it?

Q: A soccer ball with mass 0.420 kg is initially moving with speed 2.00 m/s. A soccer player kicks the…

A: Mass of the ball = 0.420 kg Initial speed = Vi = 2 m/s Final speed = Vf = 6 m/s Force applied = F =…

Q: A 5.0-kg rock is dropped, initially at rest, from a 6.0- m-high second story window. What will be…

A: Given data: Mass (m) = 5.0 kg Initial velocity (v0) = 0 m/s Height (h) = 6.0 m Required: The kinetic…

Q: A small block of mass m=.5kg is fire with an initial speed of v0 = 4m/s alog a horizontal section of…

A:

Q: Q2: The 1500-kg car has a velocity of 30 km/h up the 10-percent grade when the driver applies more…

A: Given : mass of the car, m=1500 Kg Initial velocity of the car, u=30 Km/h Final velocity of the car,…

Q: Q1) A 5 kg block initially at rest is pulled to the right along a horizontal surface by a constant…

A:

Q: A 60.0 kg skier with an initial speed of 12.0 m/s coasts up a 2.50 m high rise as shown above.  Find…

A: Given

Q: Calculate the final speed (in m/s) of a 103 kg rugby player who is initially running at 8.50 m/s but…

A: solution as

Q: 18. A 45-g arrow was released with an average force of 115 N over a distance of 5.75 m. What is the…

A:

Q: The 70.0-kg swimmer shown starts a race with an initial velocity of 1.25 m/s and exerts an average…

A:

Q: If the four Pratt & Whitney PW4000 turbofan engines of a Boeing747-400 aircraft do 5.62 Million…

A:

Q: The 1.1 kgkg physics book in figure is connected by a string to a 550 gg coffee cup. The book is…

A:

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: During the pitching motion, a baseball pitcher exerted an average horizontal force of 60 N against…

A:

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: (4) Need to know the weight of the block to answer. (5) Need to know the coetficient of friction a,…

A: The equation for the work done is,

Q: The 69.5-kg swimmer in the figure starts a race with an initial velocity of 1.3 m/s and exerts an…

A: Given Information:- Mass of the swimmer is m=69.5 kg Initial velocity of the swimmer is vi=1.3 m/s…

Q: Gayle runs at a speed of 3.30 m/s and dives on a sled, initially at rest on the top of a…

A:

Q: A 42.0-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of…

A: Given Data: The mass of a crate is, m=42 kg The constant horizontal force is, Fp=225 N The distance…

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: The 60-lb boy has taken a running jump from the upper surface and lands on his 12-lb skateboard with…

A:

Q: A golf club strikes a 0.062-kg golf ball in order to launch it from the tee. For simplicity, assume…

A: Suppose a golf club hits a ball having mass m with the force F and the golf club is in contact with…

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: A 93 kg man lying on a surface of negligible friction shoves a 56 g stone away from himself, giving…

A: Using the conservation of momentum we get M1 V1 = M2 V2 Where M1,V1 are the mass and velocity of…

Q: A force in the +x-direction with magnitude F(x) = 18.0 N – (0.530 N/m)x is applied to a 5.00- kg box…

A: Given: Force along  +x-direction with magnitude F(x) = 18.0 N – (0.530 N/m)x  Mass of box, m = 5.00-…

Q: 53. Starting from rest, a 93-kg firefighter slides down a fire pole. The average frictional force…

A:

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 60.0 kg skier with an initial speed of 16.5 m/s coasts up a 2.50 m high rise as shown in the…

A:

Q: A bowling ball m = 1.7 kg is dropped from a height h. It falls a distance, d, before encountering a…

A:

Q: a doctor is testing how much impact force does a 75kg athlete have on his knees when he jumps on his…

A: mass = 75 kg t = 0.04 sec initial speed = 7.5 m/s final speed = 0 m/s A) impact force = m ( change…

Q: The figure(Figure 1) shows a 1.75-kg block at rest on a ramp of height 2. When the block is…

A: According to Work energy theorem  Work done  = change in kinetic energy

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

A:

Q: Frictionless Figure, block 1 of mass m1=1.5kg slides from rest along a frictionless ramp from height…

A:

Q: 7. A skier whose mass is 70 kg, takes off from ski jump with a velocity of 50 m/s at an unknown…

A:

Q: A 2.0-kg block was released from rest at point A. It then moves through point B until it finally…

A:

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: A 2kg hockey puck on a frozen pond is given an initial speed of 20 m/s. If the puck always remains…

A: Data Given ,  Mass of the hockey puck ( m ) = 2 kg  Initial speed ( u ) = 20 m/s Displacement ( s )…

Q: A baseball has a mass of 0.140 kg, and it is pitched towards home plate at a speed of 48.0 m/s.…

A: The mass of the baseball, m = 0.14 kg Initial velocity of the baseball, u = 48 m/s Force exerted, F…

Q: A 100kg werewolf slides 0.6m after being shot. If the coefficient of friction between the werewolf…

A: Scenario:  A bullet hitting werewolf and let's him to slide on the ground in the direction of fired…

Q: A car's bumper is designed to withstand a 6.48 km/h (1.8 m/s) collision with an immovable object…

A:

Q: a baseball catcher puts on an exhibition by catching a 0.15 kg ball, dropped from a helicopter at a…

A:

Q: An arrow, starting form rest, leaves the bow with a speed of 25.0 m/s. If the average force exerted…

A: The given data are: u=25 m/sF'=2F Here, u is the speed in the first case, F' is the average force in…

Q: Gayle runs at a speed of 3.95 m/s and dives on a sled, initially at rest on the top of a…

A: Given that:- Mass of Gayle=47kg  Mass of sled=5.4kg Mass of Gayle's brother=30kg Initial speed of…

Q: A 86.0 kg diver steps off a 10.0 m high diving board and drops, from rest, straight down into the…

A: Given   Mass of the driver m=86.0 kg  Height of diving board h=10.0 m  He comes to rest 7.20 m…

Q: Sam, whose mass is 80 kgkg , takes off across level snow on his jet-powered skis. The skis have a…

A:

Spring Potential Energy

The potential energy is the energy possessed by a body by virtue of its position or the energy held by the object due to its position relative to other objects, its force like stresses, charge, and other factors affecting the particles of the body. The potential energy is the measure of the net work done by or on the body. The spring potential energy is the potential energy stored due to the deformation of an elastic spring and this elasticity is due to the stretched spring. The elasticity is the ability of a solid-state matter to come back to its equilibrium position or original position after any kind of external force is acted on it. It is also known as Elastic potential energy. The potential energy here is caused due to the displacement of the spring from its equilibrium position to another position and this potential energy is equal to the net work done due to the stretching of the spring. It also resembles the same mechanics of the oscillation of a simple pendulum, where due to the external force, the object moves from its equilibrium position to its maximum ends and the periodic motion continues till it comes back to the equilibrium position to rest.