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: How can we reduce friction?

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

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

A: Elbow joint

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

A: Pushing against a wall means applying a force of an arbitrary magnitude F1 on the wall.When fingers…

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: 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: 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: . 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: 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: 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: 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…

Q: why do you seem to lurch forward in a bus that suddenly slows? why do you seem to lurch backward…

A: We lurch forward in bus that suddenly slows , this is because of inertia of motion . Inertia of body…

Q: A boxer moves his head backward just before receiving a punch . Why?

A: A boxer moves his head backwards in order to increase the time interval of the punch to touch him.…

Q: Why Is It Difficult To Move A Bike With Its Brakes On?

A: When we try to move a bike with its brakes on, the wheels of the bike will skid to a different…

Q: Imagine the ground, being pushed from opposite sides...What will happen to the ground?

A: Introduction:-  We know that newton's third law of motion, which is also known as the…

Q: A spring balance which is used for long time, shows wrong readings. Why?

A:

Q: There are two propellers in a helicopter. Why?

A: If only one motor is mounted on helicopter then helicopter will turn in opposite direction for…

Q: Why do spring balances show wrong readings after they have been used for long time?

A: Elastic fatigue is the property of an elastic body which, under the action of repeated alternating…

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.