A boy throws a steel ball straight up. Consider the motion of the ball only after it has left the boy's hand but before it touches the ground, and assume that forces exerted by the air are negligible. For these conditions, the force(s) acting on the ball is (are):

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: Which of the following statements is correct according to Newton's first law of motion? A. an object…

A: Newton's first law states that an object at rest stays at rest or an object in motion stays in…

Q: block of mass 144 kg lies on a horizontal plane. A horizontal force F of magnitude 1100 N is applied…

A:

Q: An object of mass m sits on a flat table. The Earth pulls on this object with force mg, which we…

A: Newtons third law states that for every action there is an equal and opposite reaction. Here earth…

Q: If two bodies of different masses, initially at rest, are acted upon by the same force for the same…

A: The acceleration is given by the force acting per unit mass.

Q: Rank the automobiles based on the magnitude of the force needed to stop them, from largest to…

A: As per the given data, There are six cars. Lets rank them as A,B,C,D,E and F starting from left to…

Q: A block of mass m1 = 2.5 kg moving on a rough surface is connected by a light inextensible cord…

A: Given data: Mass 1 is, m1=2.5 kg. Mass 2 is, m2=8.0 kg. Coefficient of kinetic friction is, μk=0.27.

Q: A bird sits on a branch of a tree. Which of the following forces forms an action-reaction pair…

A: Introduction:Newton's third law state that every action has an equal and opposite reaction to the…

Q: The weight of a typical high school physics student is closest to 1. 1500 N 2. 600 N 3. 120 N 4. 60…

A:

Q: You swing a bat and hit a heavy box with a force of 1600 N. If the box moves when you hit it, the…

A: Given data: The force exerted by the bat on the box F = 1600 N

Q: Superman and Batman are on a sheet of iče, preparing for battle. Superman has a mass of 94 kg, and…

A: Given:- mass of the superman = 94 kg  mass of the badman = 117 kg   The force applied by superman on…

Q: A force produces 3 m/square second acceleration to a 4 kg ball. The mass of the ball whose…

A:

Q: A boy standing on a frictionless ice rink is initially at rest. He throws a snowball in the…

A: As the boy throws the snowball, he exerts a force on the snowball in the forward direction along the…

Q: 7. The blocks shown in the figures have equal masses and are made of the same material. The velocity…

A: Part (A) Let m is the mass of block and g is the acceleration due to gravity. The weight on figure…

Q: A 3.5_kg frog sits on a 8.1_kg block of wood which is itself on a 94 kg slab of concrete on the…

A: Given: Mass of the frog is 3.5 kg. Mass of the block of wood is 8.1 kg. Mass of the slab is 94 kg.

Q: Different materials, A, B, C, and D, rest on a table. a. From greatest to least, rank them by how…

A:

Q: Two blocks of masses 12 kg and 14 kg are placed in contact with each other on a frictionless…

A:

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 block has a mass of 81.0 kilograms. The coefficient of static friction between the block and the…

A: Given data:  Mass (m) = 81.0 kg Coefficient of static friction (μs) = 0.621 Horizontal force (F) =…

Q: Two rowboats on a lake are lined up, in contact, front to back in the same direction. A passenger in…

A:

Q: What net external force is exerted on a 1100-kg artillery shell fired from a battleship if the shell…

A: Mass of artillery shell M=1100kg Acceleration of artillery shell 'a'= 2.40 x 10^4

Q: According to Newton's third law of motion, forces always occur in pairs called action-reaction…

A: According to Newton third law of motion every action has a equal and opposite reaction . If an…

Q: Two people, one of mass 100 kg and the other of mass 50 kg, stand facing each other on an…

A:

Q: The barrel pushes back with a force of magnitude (Answer in N.)

A:

Q: A man weighing 800 Newtons is standing in an elevator. If the elevator rises with an acceleration of…

A:

Q: A golf pro places a ball at rest on the tee, lines up his shot, draws back his club, and lets one…

A: Given:  a ball and the club

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

A:

Q: Three objects whose masses are 2.0 kg, 3.0 kg and 4.0 kg are joined by strings as shown. The 2 kg…

A:

Q: Calculate the magnitude of the force of kinetic friction between the hockey puck and the ice.…

A: Given:

Q: A 6.00 kg block is in contact with a 4.00 kg block on a horizontal frictionless surface. The 6.00…

A: Given

Q: person dives toward the bottom of a swimming pool, the bouyant force acting on her increases."

A: As per Archemede's principle  Buoyant force =weight of liquid displaced

Q: Block A rests on top of block B as shown in. The table is frictionless but there is friction (a…

A: Mass of block B, mB = 6 kg Mass of block A, mA = 2 kg Force applied, F = 12 N Acceleration of block…

Q: A block with mass of m, = 2 kg is placed on top of a block with a mass m2 = 4 kg. A horizontal force…

A:

Q: A net force of 20 N exerted on a wooden block produces an acceleration of 4 m/s2. The mass of the…

A:

Q: Rank the automobiles based on the magnitude of the force needed to stop them, from largest to…

A: Formula of force:  F=ma Where, F = Force. m = mass. a = acceleration.

Q: Two bows, A and B, are used to fire arrows X and Y respectively. The average force bow A exerts is…

A:

Q: A net force of 15 N exerted on a wooden block produces an acceleration of block is a. 75 kg O b. 10…

A: The acceleration of an object as produced by a net force is directly proportional to the magnitude…

Q: A net force of 20 N exerted on a wooden block produces an acceleration of 4 m/s. The mass of the…

A: F = 20 N a = 4 m/s2

Q: A brick of mass M has been placed on a rubber cushion of mass m. Together they are sliding to the…

A: Given information:

Q: A 76.1 kg astronaut of holding a 12.3 kg tool pack while drifting at 10.6 m/s to the right. She…

A:

Q: Two blocks are in contact on a frictionless horizontal surface. The blocks are accelerated by a…

A:

Q: A net force of 15 N exerted on a wooden block produces an acceleration of 5 m/s. The mass of the…

A:

Q: The fact that the acceleration of free fall is the same for all masses is explained by Newton’s (a)…

A: Step 1The acceleration of the free fall is same for all the body. According to the Newton’s second…

Q: F: force of gravity P f: frictional force Ñ: normal force f <

A:

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.