In the absence of air resistance, which will fall first to the ground..... a handkerchief or a metal hammer? Why?

Q: A bullet fired from a rifle begins to fall(a) as soon as it leaves the barrel.(b) after air friction…

A: bullet fired from a rifle begins to fall

Q: Over the short time span of a tennis ballI hitting the racket during a player's serve, the ball's…

A: Over a short span of time tennis ball hitting the target

Q: A 13-N weight and a 12-N weight are connected by a massless string over a massless, frictionless…

A: Given:               g= Acceleration due to gravity               mass A 'mA' = 13g kg…

Q: The acceleration of freely falling bodies is known as

A: The acceleration of freely falling bodies is known as acceleration due to gravity.

Q: A stone is thrown upward from a bridge at a speed of 10m/s. it narrowly misses the bridge on the way…

A: The expression for the height of the bridge from kinematics equation,

Q: A man pushes two boxes with the same amount of force (because they look identical and he can’t see…

A:

Q: When changing the mass of an object in free fall and neglecting friction through the air, what…

A: Here body performed free fall motion. Let the mass of  body m fall from height h with zero initial…

Q: If you apply the same amount of force to a bowling ball and a golf ball the golf ball moves faster…

A: Answer is inertia . Momentum is directly dependent on mass and velocity of the object Changes in…

Q: Discuss whether or not a falling object increases in speed when its acceleration of fall decreases?

A: Whenever we have a positive acceleration, the speed will increase, irrespective of the magnitude of…

Q: A baseball falls from the top of a skyscraper. When it reaches half the terminal speed, the ball…

A:

Q: In synchronized diving, divers remain in the air for the same time. With no air drag, they would…

A: In an appreciable air drag, the divers, in synchronized diving remain together in a fall. The divers…

Q: A parachute descends slowly. Why?

A: When any object falls from a height, gravity acts on it, which pulled it downwards, but the air…

Q: If two objects having the same size fall through air at different speeds, which encounters the…

A: Air resistance force is increasing with the increase of speed and the frontal area of the object.

Q: When a skier skis down a hill, the normal force exerted onthe skier by the hill is(a) equal to the…

A: Free body diagram of the skier on the incline is

Q: A small glider is coasting horizontally when suddenly a very heavy piece of cargo falls out of the…

A: Law of Conservation Of Momentum- When there is no force applied then momentum is conserved for the…

Q: A woman stands on a spring scale in an elevator. At which situation is her apparent weight greates

A: SOlution: if standing on the spring scale in elevator. In what situation the weight will greater.

Q: when a car brakes hard, _ is moving backward.  1. the driver inside the car 2. nothing 3. the car…

A: Given:- when a car brakes hard what is moving backward.

Q: A block is supported by a string. When is the tension in the string equal to the weight of the…

A: A block is supported by a string.we have to find when is the tension in the string equal to the…

Q: Which is more difficult to stop a sailboat or a cruise ship?why?

A: A cruise and a sailboat, both stay afloat on water due to the buoyant force acting on them.

Q: A man humping out of a moving train falls with his head forward. Why?

A: While a man is jumping out of the moving train the first body part that touches the ground is the…

Q: A baseball is hit into the air with a bat. When does the ball have the greatest KE? O When it leaves…

A: By conservation of mechanical energy, The sum of kinetic energy and potential energy is constant…

Q: how can two objects with different masses, when dropped from the same height, hit the ground at the…

A: Time of flight for an object to reach ground is given by,

Q: A mass of 2 kg hangs freely at the end of a string, wh passes over a smooth pulley fixed at the edge…

A: Mass is denoted using m or M. Weight is the measure of the amount of force acting on a mass due to…

Q: A skateboarder of mass 70.0 kg approaches the top of a hill at a velocity of 2.0 m/s. The hill is…

A:

Q: If you throw a ball upwards it will eventually slow down and fall,why is that so?

A: If we thrown an object in space, it will keep moving far forever and never return, because there is…

Q: You hit a wall with a stick. The equal but opposite reaction is O the wall pushes against you O you…

A: Using Newton's 3rd law of motion to solve the problem

Q: As cars travel, oil and gasoline leaks onto the road surface. If a light rain falls, what does this…

A: As car travels, oil and gasoline leaks onto the road surface, on light raining the gasoline…

Q: A 0.80 kg mass is hung for me string of 0.70 meters. The mass hangs at rest. What is the weight of…

A: The weight of the hanging mass can be determined as, Here, m and g represent the mass and the…

Q: A woman on a bridge 106 m high sees a raft floating at a constant speed on the river below. She…

A:

Q: Two masses are connected by a string which passes over a pulley with negligible mass and friction.…

A:

Q: A body has a mass of 50 kg. Its velocity is brought down from 20 m/s to 5 m/s by a resisting force…

A:

Q: An object cannot remain at rest unless

A: Given statement is  An object cannot remain at rest unless

Q: When a basketball player dribbles a ball, it falls to the floor and bounces up.  Is a force required…

A: When the ball hit the ground then there is collision after the the momentum of the ball changes.…

Q: A 13-N weight and a 12-N weight are connected by a massless string over a massless, frictionless…

A: 1- Given that a 13-N weight and a 12-N weight are connected by a massless string over a massless,…

Q: When jumping from a significant height, why is it advantageous to land with your knees bent?

A: Newton’s law says that rate of change in momentum is directly proportional to the force applied.…

Q: The apparent weight of a person in a lift which is moving down with uniform acceleration is _______.…

A: The free-body diagram of the person  in a lift that is moving down with uniform acceleration is…

Q: An object suspended from a rope falls at a constant velocity downward, i.e. the tension in the rope…

A: Free fall is defined as the motion of the object where gravity is the only force acting upon it.…

Q: If a person standing near a moving train, there is a danger that he will fall towards it. Explain.

A: If a person standing near a moving train, there is a danger that he will fall towards it because

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: