A person is falling from a certain height. Which of the following is likely to happen? a) If he falls on cement floor, he gets more injuries b) If he falls on a heap of sand, he receives less injuries c) He gets the same injuries in both the cases d) He is unaffected

Q: A person is standing in an elevator. In which situation he finds his weightless? a) When the…

A: Option b

Q: How much force is needed to make a rocket move in constant velocity in a frictionless outer space?…

A: If a rocket moves with constant velocity, its acceleration will be zero.

Q: Two objects one having three times the mass of the other, are dropped from the same height in a…

A:

Q: A box weighing 100 N made of Copper is pushed on a horizontal surface made of steel. Using the…

A: Given: weight of box W = 100 N cooper : box steel  : table known:

Q: Two blocks of masses m1 and m2 are piled as in the diagram. A rope is passed around a pulley and…

A:

Q: Two blocks started to move from the position in the figure. Block A moves in a horizontal and…

A:

Q: A dresser is being pushed by one person and pulled by another(as shown) such that is slides across…

A:

Q: A net force is applied to an object. If the same net force is then applied to a second object with…

A: Let the force applied on the objects of masses m1 and m2 be F. m2 = 7.1m1

Q: A box of mass 10 kg sits on a frictionless table. You push down on the box at angle of 30° with a…

A:

Q: 1) Three blocks A, B and C are connected by two ropes with tensions T, and T2. Blocks A and B weigh…

A:

Q: Problem 3: A truck pulls a crate with a mass of 500 kg. The horizontal component of the tension of…

A: Given Data :mass of crate m = 500 kgAcceleration a = 2 m/s2Horizontal component of tension Tx = 2622…

Q: Suppose you had a 5.00 kg sack of sugar and a bathroom scale. If you took the scale into an elevator…

A: Given data: Mass of sack of sugar, m=5.00 kg Acceleration of the elevator, a=1.00 m/s2  The mass…

Q: Suppose you had a 5.00 kg sack of sugar and a bathroom scale. If you took the scale into an elevator…

A: Given: Suppose you had a 5.00 kg sack of sugar and a bathroom scale. If you took the scale into an…

Q: You hold a book against the wall with a push force of 11 N. What is the magnitude and direction of…

A:

Q: As the force acting on an object decreases, the acceleration of the object Select one: a. remains…

A: According to Newton's second law of motion, F = m a  Here a = acceleration            F = Force…

Q: If an object is not moving, does that mean that there are no forces acting on it? Explain with…

A: This is not necessarily true that if the object is not moving then there is no force acting on the…

Q: An object has a mass of 4 kg and is moving with acceleration a= 5i -j. What is the magnitude of the…

A:

Q: "Objects at rest remain at rest; objects in motion remain at constant velocity unless they…

A: Newton's first law of motion states that- 'an object at rest will remain to be at it's state of rest…

Q: 4) You are driving an older car that doesn't have antilock brakes. Your initial speed is 25 m/s. The…

A:

Q: 37. A standing person pushes a nearby chair which then slides along the floor. The chair and person…

A: A standing person pushes a nearby chair which then slides along the floor.The chair and person begin…

Q: 1. It is easier to keep a heavy object sliding along the ground than to get the object to begin to…

A: Static friction is the frictional force that keeps an object at rest. fs = µs N  Kinetic friction is…

Q: As rockets, aircraft also satisfies Newton third law. To move in the direction of travel, the engine…

A: Newton's third law states that every object when exerting a force, the other object exerts the same…

Q: A 20-kg mass slides down a flat hill that makes an angle of 10° with the horizontal. If friction is…

A: Given  M = 20 kg  g = 9.81. Angle (a) = 10°

Q: A force pushes on a 2.0 kg object – it accelerates at a rate of 3.0 m/s2. If the mass is now reduced…

A: When a body of mass m is applied a force, it undergoes accelerated motion. According to the Newton's…

Q: A bullet with mass m and speed v penetrates a tree a distance d. a) Find the average friction force…

A:

Q: nurse pushes a cart by extending a force on the handle at a downward angle 30° below the horizontal…

A:

Q: A person will feel weightless whenever Show answer choices A they are in a free-fall environment…

A: Required : The correct option.

Q: An object of mass m is at rest on an inclined surface. The only forces acting on it are its own…

A: Given data: Mass of the object = m Friction force = F Need to determine the magnitude of the normal…

Q: 2. The picture shows a wine bottle being held in a rack. Explain why the wine bottle doesn't fall?

A: Answer:     Given statement:   The given figure contains the wine bottle with a plank contains a…

Q: 6) The kinetic friction force that a horizontal surface exerts on a 60.0-kg object is 50.0 N. If the…

A: From Newton’s second law of motion.

Q: ng on the bicycle, and their sum is zero. re approximately parallel to the velocity. e approximately…

A: Given: A correct statements are shown as,

Q: wo forces act on an object.  The magnitude of the net force acting on the object a) Equals the sum…

A: The summation of all forces gives the net force acting on an object. The forces could be negative or…

Q: A loaded sled with a weight of 500 N slides down a frictionless incline with an acceleration of 2.0…

A: Given Weight of the sled is W=500 N Acceleration of the sled is a=2.0 m/s2   We have to find the…

Q: True or False: "It is possible for a body to move with constant velocity even though the net force…

A:

Q: A box weighing 100 N made of Copper is pushed on a horizontal surface made of steel. Using the…

A: Given : A box weight = 100 N            Coefficient of friction of copper = 0.53

Q: An object on a rope is lowered at a steadily decreasing speed?  Which is true? a) The rope tension…

A: Assume a situation in which an object of weight W on a rope is lowered at a decreasing speed such…

Q: A person standing under an umbrella experiences rain, which later turns to hail. Is the force…

A:

Q: 2. A loaded truck collides with a car causing huge damage to the car. Which of the following is true…

A: Given, A loaded truck colliders with a car causing huge damage to the car.

Q: À sprinter accelerates at the beginning of a 100-meter race and then tries to maintain a maximum…

A: After the sprinter reaches maximum speed, she maintains the same speed throughout the rest of the…

Q: A 30-kg box is being pushed along a horizontal surface. The coefficient of static friction between…

A: Find the horizontal exerted on the box. Fh=F+Ffr=ma+mgμk

Q: It is more difficult to walk on a sandy road than on a concrete road because:   A. sand is soft and…

A: