From a flying aeroplane a body should be dropped in advance to hit a target, why?

Q: A 0.500 kg block is released from rest at the top of a frictionless track 2.50 m above the top of a…

A: Given Data: The mass of a first block is, m1=0.500 kg The height of the first block above the table…

Q: A sandbag is motionless in outer space. A second sandbag with 2 times the mass moving at 9 m/s…

A: Given information:Mass of moving sandbag (m1) = 2mMass of the stationary sand bag (m2) = mVelocity…

Q: A truck with a mass of 1490 kg and moving with a speed of 14.5 m/s rear-ends a 731 kg car stopped at…

A:

Q: A friend drops a 0.625-kg basketball from 2.6 m above you. What is force exterted by your hands to…

A: In this question we are given that a friend drops a 0.625-kg basketball from 2.6 m above you and we…

Q: A railroad diesel engine weighs four times as much as a freight car. The diesel engine coasts at 4.0…

A: Given data: Mass of diesel engine (m1) = 4m2 Mass of freight car = m2 Initial velocity of diesel…

Q: When a rifle with longer barallel is fired, the force of expanding gases acts on the bullet for a…

A: The work done can be defined as the change in energy of the object or the product of force times the…

Q: A jet plane holds 1000 gals of fuel. Fuel weighs 6.00 lbs/gal. The engine consumes 1200 lbs/hr. The…

A: Given Volume of the fuel V = 1000 gal Density of the fuel d = 6.00 lbs/gal Rate of Burning r = 1200…

Q: A 90 kg halfback runs north and is tackled by a 120 kg opponent running south at 4 m/s. The…

A:

Q: Which is easier to get swinging, a baseball bat held at the end or one held closer to the massive…

A: Smaller the rotational inertia, easier to get a baseball bat swinging.

Q: A massive stone and a stone of one-half the mass are dropped from a tall building at exactly the…

A: When two bodies of different mass are dropped from the same height, both reach the ground at the…

Q: the passonger ball horizantally basket of a Outward from the 10. A hot-air person in balloon throws…

A:

Q: A person holds a stick weighing 0.94 kg in his left hand, 9.0 cm from the left end of the stick, and…

A: Given: Force exerted by the ball, Fball = 29 Nmass of bat, m = 0.94 kg

Q: A 0.130-kg baseball hits a wall head-on with a forward speed of 34.0 m/s. It rebounds with a speed…

A: Mass of baseball, m=0.13kg Initial velocity, u=34m/s Final velocity, v=-23.5m/s Contact time, t=0.1s

Q: A railroad diesel engine weighs four times as much as a freight car. If the diesel engine coasts at…

A:

Q: A rubber ball and a lump of clay have equal mass. they are thrown with equal speed against a wall.…

A:

Q: A 5-kg fish swimming 1 m/s swallows an absentminded 1-kg fish swimming toward it at a speed that…

A:

Q: An air gun with a 30-cm long barrel fires a 56-g ball straight upwards. While the ball is in the…

A:

Q: When a rocket-propelled ship launches from the ground, it expels exhaust gas from the bottom of the…

A: In this problem, it is asking why the ship is able to leave the ground when a rocket-propelled ship…

Q: Eric and Ryan are in the weightlifting room. Eric pushes the 25-pound weight sled 30 m in one…

A:

Q: A 2.0-kg box is attached by a string to a 5.0-kg box. A compressed spring is placed between them.…

A:

Q: A 5.4-kg fish swimming 1.0m/s swallows an absentminded 1.0-kg fish swimming toward it at a speed…

A: According to conservation of momentum for both the fishes,

Q: How much force acts on a tossed coin when it is halfway to its maximum height? How much force acts…

A: Answer:-  When the force acts on a tossed coin that has reached halfway its maximum height is 50%.…

Q: Someone has also put a third puck on the air hockey table which is covered in gum all around its…

A:

Q: A 5 kg chunk of clay is thrown at a stationary 7 kg bowling ball. The clay sticks to the bawling…

A: We need to comment on the momentum of "bowling ball+clay" system.

Q: An iron sphere of mass 30 kg has the same diameter as an aluminum sphere of mass 10.5 kg. The…

A: Given :-mass of iron sphere (MF)=30 kgmass of iron sphere (MAl)=10.5 kg

Q: A truck with a mass of 1890 kg and moving with a speed of 14.5 m/s rear-ends a 797 kg car stopped at…

A: The speed of both vehicle after the collision in meter per second can be calculated using following…

Q: Height of the ball before falling = 70m Height of the ball at the top of the first bounce = 53m…

A:

Q: An explosion in a rigid pipe shoots three balls out of its ends. A 6 g ball comes out the right end.…

A:

Q: 5. A big fish swims upon and swallows a small fish at rest. After lunch, the big fish has less a.…

A: Speed is said to be the distance that is covered at a particular time. Since speed has only…

Q: A boy and a girl are just standing on a frozen lakeThe girl pushes the boy. The boy speed of 4.64…

A:

Q: 8. A 2.0 kg otter starts from rest at the top of a muddy incline 85 cm long and slides down to the…

A: mass = 2 kg initial speed = 0 m/s L = 85 cm = 0.85 m t = 0.5 sec

Q: A baseball pitcher can throw a ball with a speed of 40 m/s. He is in the back of a pickup truck that…

A: Velocity of ball with respect to truck (vBT)=-40 m/s Velocity of ball with respect to ground…

Q: Billiard (pool table) balls colliding are a very close approximation to a/an __________…

A: In elastic collision the objects cannot stick together.

Q: An empty train starts more quickly than a loaded train. Why?

A: On applying same force on two objects with different masses, object with smaller mass will…

Q: A ball has a mass of 10-Kg and is traveling to the right at 30 m/s. A second ball, which is…

A:

Q: A 10.0 -g bullet is moving at 300m/s is fired into a 1.00 -kg block at rest. the bulet passes…

A:

Q: If a 1 kg ball and a 5 kg ball of the same size are dropped from a height of 3 m at the same tims…

A: The air resistance of a falling object depends on the area of the cross-section. Therefore more the…

Q: A 25-g bullet is fired into a 16-kg wooden block. If the bullet remains embedded in the block, and…

A: Mass of bullet = 25 g  Mass of block = 16 kg  Initial velocity of bullet = u  Combined velocity of…

Q: A kangaroo of mass 34 kilograms is standing near the right end of a cart of mass 52 kilograms (the…

A: Draw the symmetric diagram.

Q: At a bowling alley, Lily throws a 6 kg bowling ball at a velocity of 8 m/s. The bowling ball…

A: Solution: given thatbowling ball m1 = 6 kgvball, i = 8 m/spin mass m2 = 0.9 kgvpin, f =12 m/s

Q: A rock is sitting on the ground. Which of the following best describes what you can do to the rock…

A: (a) 4th option is correct . Lift the rock . Explanation :- When we lift the rock it's…

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.