A penny rotating inside of a balloon is an example of momentum O electricity mass centripetal force

Q: 4. In a vacuum tube, a feather is seen to fall as fast as a coin. This is because a) gravity doesn't…

A: When two objects are dropped from a height because of air resistance, the lighter object falls…

Q: Tension force  ________________________ throughout a string that changes direction over a pulley.

A: Tension force is the force which acts through a cable, rope or wire.

Q: A 76 kg man pushes off from the 84kg block on ice and slides away at a speed of 3 m/s What is the…

A: Given Information  Mass of man =76 kg Mass of block= 84 kg Speed = 3 m/s To Calculate: Speed of the…

Q: A hockey puck having a mass of 0.30 kg slides on the frictionless, horizontal surface of an ice…

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Q: A pail of water can be whirled in a vertical path such that none is spilled. Why does the water…

A: Centrifugal force is the inertial force acting on the particle performed circular motion, Which acts…

Q: A penguin can walk across an icy surface because of: Newton's First Law Newton's Second Law O…

A: According to Newton's first law of motion , an object tends to remain in it's inertial state of…

Q: A nurse pushes a gurney. The action force is the force exerted by the nurse on the reaction force…

A: Action force : the force exerted by the nurse on the gurney to find : the reaction force

Q: Gravity____ on other objects to move it closer to the ___ of the object.

A: Newton's law of gravitation is expressed as, F=Gm1m2r2

Q: A ball is dropped at 1.5 meters above the ground in 1.2 seconds. What is its velocity

A: When the ball reaches ground its displacement is s=-1.5 m Time taken to reach ground t=1.2 s The…

Q: A fielder catching a fly ball is an example of Newton’s

A: Answer : Newton's Second law.

Q: A juggler juggles 5 balks with 2 hands. Each ball rises 2 meter above his hands. How many times per…

A: Number of balls (n) = 5 Height reached by each ball above the hands (h) = 2 m Let the Time of…

Q: Three boats are each being pulled by one rope connected to the smallest boat (in a line). The weight…

A: All the three boats are connected by one rope, so their acceleration will be the same.  Consider all…

Q: "When a card placed over a tumbler is flicked with the finger, the coin placed over it falls in the…

A: "When a card placed over a tumbler is flicked with the finger, the coin placed over it falls in the…

Q: A large basketball and a smaller tennis ball are dropped at the same time from the top of a…

A: Acceleration is acceleration due to gravity  which is independent of mass .Hence, acceleration is…

Q: A person is attracted towards the center of the earth by a 500-N gravitational force. The force that…

A: person is attracted towards the center of the earth by the gravitational force, FG=500 N

Q: Divers go off the diving board and balls up their body as they do a flip. Divers spin faster than if…

A: Required : Why do the divers ball up.

Q: An object sitting on the edge of a table. A bullet shot up into the air before it gets to the top. A…

A: Potential energy is defined as the energy possessed by an object by virtue of its position (height…

Q: An elevator is moving upward at a constant speed of 4 m/s. A man standing 10 m above the top of the…

A: Constant speed of elevator (v) = 4 ms , upwards height of man above the top of elevator (h) = 10 m…

Q: A 5-kg ball moving at 6m/s strikes a 3-kg ball iniatially at rest. The 5-kg ball continues moving in…

A: Given data: Mass of ball 1 (m1) = 5 kg Initial velocity of ball 1 (vi1) = 6 m/s Mass of ball 2 (m2)…

Q: Mass and weight  choose from the choices below:       Both have different measuring units…

A: In the given question, We have to discuss about mass and weight measuring units.

Q: A 30 kg girl and a 25 kg boy face each other on friction free rollerskates the girl pushes the boy…

A: (given) Mass (m1) of the girl = 30 kg Mass (m2) of the boy = 25 kg Speed (v2) of the boy = 1 m/s v1…

Q: A 66 kg man pushes off from the 108kg block on ice and slides away at a speed of 4 m/s What is the…

A: Given: Mass of a man (m) = 66 kg. Mass of a block (M) = 108 kg. Speed of man (v) = 4 m/s.

Q: friction is not experience by a ball falling down from a high building. true or false. support your…

A: This isn't false because when a ball falls from high building then an air resistance acts on ball…

Q: A ball is tossed off the edge of a cliff with the same speed but at different angles, as shown. From…

A:

Q: Force of impact is the force: A) by the objects weight B) by the speed of the object C) when the…

A: Here, we have to select the best option for the given stated problem of Force of impact.

Q: The firing of a bullet by a rifle causes the rifle to recoil backwards. The speed of the rifle's…

A: The recoil speed is the speed that is experienced in the reverse direction of bullet speed due to…

Q: A 50 kg man pushes off from the 94kg block on ice and slides away at a speed of 3 m/s What is the…

A:

Q: Changes in motion are caused by:  Choose from the choices below.       unbalanced forces…

A:

Q: A puck of mass m-2 kg moves on a drcle of radius r-0.5 meters, on a frictionless table. The puck is…

A:

Q: Two rail cars roll without friction on a track.  The rail cars have different masses.   The heavier…

A: Using the conservation of momentum, mv+Mu=m+MVI

Q: A table cloth can be withdrawn from under a set of dishes without dislodging them. This shows that…

A: Inertia is a property in which if object is in motion it will remain in motion or if it is at rest…

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: The mass of an object is a measure of its __________. a. inertia b. energy c. force d. gravity

A: The mass of object is a measure of its inertia.

Q: A person steps on to a scale in a stationary elevator and notes their weight. The elevator begins to…

A: A person steps on a scale in a stationary elevator. The elevator begins to accelerate downward.

Q: A golf club hits a golf ball with a force of 2500 N. The golf ball hits the club with a force Select…

A:

Q: The momentum of a moving object will change if O the velocity remains the same the object is not in…

A: We need to examine which situation is going to result in change in momentum of an object.

Q: Two objects with different masses have the same momentum. The less massive object will have a…

A: solution is given as

Q: 10-kilogram block with an initial velocity of 10 m/s slides 10 meters across a horizontal surface…

A:

Q: Two objects, A and B, have the same size and shape. Object A is twice as massive as B. The objects…

A:

Q: A bucket of mass equals 18.7 kg(mb) is knocked off the side of a wall. The bucket falls 18.6 m to…

A: The moment of inertia of the solid cylinder is given by, I = Mcr22 = 3.26×0.48722 = 0.38kg-m2 The…

Q: Two blocks of mass m and M are hanging off a single pulley. Determine the acceleration of the…

A: Suppose that the two blocks hang through the pulley as in an Atwood machine. Consider the downward…

Q: Determine whether each description refers to a force or not. Force Not a force Answer Bank the light…

A:

Q: When a cannonball is shot into the air through an explosion, the cannon shooting the cannonball is…

A: Cannon moves backward after shooting the ball

Q: Two children float motionless in a space station. The 20 kg girl pushes the 40 kg boy and the boy…

A:

Q: The actual weight of a body is always: O greater than the apparent weight smaller than the apparent…

A: Let the mass of a body is m  then the weight will be w=mg  ( g is the acceleration due to gravity)…

Q: of conservation of momentum. The bricks on top of the carts have the same mass as the cart. The…

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Q: A rocket moves because of the conservation of O mass O spin angular momentum O momentum O energy

A:

Q: An 8-g bullet is fired horizontally to a wooden cube with a mass of 9 kg at rest. The bullet and…

A: