1. A car and truck collide and stick together in a perfectly inelastic collision as shown. Use conservation of momentum to find the final velocity of the final system, both magnitude and direction. Ve = 15 m/s Vf 370 M. = 2000 kg V, = 5 m/s OM=8000 kg

Q: 18. If a bicycle is moving forward at 100 N and air resistance was 30 N, what is the total force of…

A: The forward-moving force of the bicycle, F=100 N   The air resistance, fair=30 N

Q: Why do you need to brace yourself before pushing on something heavy or throwing something?

A: Bracing: Bracing is defined by a type of voluntary core activation that enabling tighten up on…

Q: at is unit of force

A: Given:- What is a unit of force? Find:- Explain?

Q: Two vectors, one 3 N and the other 4 N, can have a resultant of (a) 0 N. (b) 5 N. (c) 8 N. (d) Any…

A: Given

Q: How can we reduce friction?

A: Friction is defined as the resistance offered by a surface on an object, when moving through it.…

Q: a) Why does any person lean towards right while carrying a bag in her left hand?

A: When all the forces acting on the body are balanced, the body acquires the state of equilibrium.…

Q: You and a friend can each pull with a force of 20 N. If you want to rip a rope in half, what is the…

A: Answer Tie the rope to a tree, and you both pull from the same end. Take advantage of the fact that…

Q: s Weight is between fulcrum point ----and muscle force for example *

A: Elbow joint

Q: Why Friction is important?

A: Friction

Q: Why Is It Difficult To Climb Up A Greasy Pole?

A: Grease decreases the friction between the surfaces in contact. While climbing up the pole, a person…

Q: If a system is in equilibrium It is not moving nor accelerating It can be moving but not…

A: Mathematically, Newton's second law of motion can be represented as, F = ma, where F is the net…

Q: You are driving car ahead lose control goes off road hit a tree. When I get to car driver is slump…

A: Firstly, u should picup the baby and remove him from the car. You should try to stop the babi's…

Q: What causes water to be removed from clothes in a spin-dryer?

A: in a spin dryer

Q: If it were not for air resistance, why would it be dangerous to go outdoors on rainy days?

A: Air resistance causes the speed of the body to slow down.

Q: Birds rest on live wire on the streets, why are they not being electrocuted. Will men not get…

A: Answer:-  The feathers of birds act as a insulator and hence the current does not pass through them.…

Q: Why is it called normal force?

A: Normal force

Q: Why do you think seat belt is important? Relate this to physics

A: Newton's first law of motion : Newton’s first law states that if a body is at rest or moving at a…

Q: . An astronaut on a space walk discovers that his jet pack no longerworks, leaving him stranded 50 m…

A:

Q: What happens when you apply a force to an object?

A: A force can produce the following effects to an Object: (a) A force can move a stationary object: An…

Q: An object in rotation is Never accelerating Accelerating some of the time Always accelerating More…

A:

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: Which allows you to jump the farthest? Why? Only using your ankles? Knees and ankles?…

A: The ability to jump the farthest largely depends on the joint and muscle coordination in your lower…

Q: Why is it easier to start and stop a car than a train?

A: From Newton's second law a=Fm To start or stop an object, the object has to get accelerated in the…

Q: Explain, from a force standpoint, why you need to reduce your normal driving speed around curves…

A: In order to safely negotiate a curve at a given velocity, frictional forces between the tires and…

Q: Why is it harder to push a steady object in comparison to push a constantly moving object?

A: For a steady object, static friction is zero. If we push it, due to Newton's Second Law there is an…

Q: Why doesn’t the Leaning Tower of Pisa topple over?

A: The leaning tower of Pisa is one of the man-made wonder, which is famous for its erection.The tower…

Q: When we walk, we pull on the ground with friction. Why does this move us forward

A:

Q: What are two examples of a wedge, other than a wedge used to chop wood?

A: Wedges are used in different ways for cutting, splitting and tightening, etc

Q: Why does a child in a wagon seem to fall back when you give the wagon a sharp pull forward?

A: To find: The reason of falling child in backward direction.

Q: Why are lightweight tires preferred in bicycle racing? Discuss and explain.

A: Lightweight Tires preferred in bicycle racing

Q: Can the coffee filter be considered a particle under a net force

A: Fom question: Forces acting on coffee filter are gravitational force on the mass of filter and air…

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: When you push against a wall with your fingers, they bend because they experience a force. What is…

A: Newton's third law of motion tells us that for every action there is an equal and opposite reaction.…

Q: Choose the best answer to the following: When you bend the branch of a tree by hanging on its end,…

A: Then the top side of the branch is under tension when you bend the branch of a tree by hanging on…

Q: he normal force is... Always points straight up Is always equal to the force of gravity Always…

A: Ques: The normal force is... Always points straight up Is always equal to the force of gravity…

Q: If you have a spinning wheel and want to stop it by touching it, where will it be most effective to…

A: in this type of question  we discuss  about apply force against system.

Q: Name the three types of calipers used on disc brakes.

A: Braking is a system that resists motion by absorbing energy, the action is accomplished by means of…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.