Whiplash sometimes results from an automobile accident when the victim’s car is struck violently from the rear. Explain why the head of the victim seems to be thrown backward in this situation. Is it really?

Q: Some of the top drag racers in the world are able to reach speeds of 530 km/h over a distance of…

A:

Q: Some people say that the “force of inertia” (or “force of momentum”) throws the passengers forward…

A: To determine: Explain whether the force of inertia throws the passengers forward when a car brakes…

Q: In the Atwood machine shown below, m1 = 2.00-kg and m2 = 5.60-kg. The masses of the pulley and…

A: Given,

Q: A space explorer is moving through space far from any planet or star. He notices a large rock, taken…

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Q: If the falling body had been given an initial downward push instead of being only released would the…

A: Firstly we have to understand some basic terminology for better understanding of the above problem.…

Q: Determine the magnitude and direction of resultant force for system shown in Fig. 2 kN | 30° 3 kN…

A: let the given forces are  F1,F2 ,F3 and F4  And the resultant is Fnet

Q: A 200 kg coal bag is lifted by a crane from a Coal-mine with an acceleration of 5 m/s^2. The force…

A: According to the Newton's second law  Net force = mass x acceleration

Q: If the forces that act on a cannonball and the recoiling cannon from which it is fired are equal in…

A:

Q: An object is accelerated by a force of 10N to the right. A second force of 10N suddenly acts in the…

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Q: Compute the initial upward acceleration of a rocket of mass 1.3 * 104 kg if the initial upward force…

A:

Q: An aircraft gains speed during takeoff due to the constant thrust of its engine. When is the…

A: Given : an aircraft

Q: Can you give a practical example of how a body can still accelerate even without changing its speed?…

A: Acceleration is the rate of change of velocity. That is a body accelerates when there is a change in…

Q: 15. Why does an object in motion remain in motion, while an object at rest, rem O The object is…

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Q: Can a body have a velocity without acceleration? Explain your answer by giving examples.

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Q: Can you cite an example in which the acceleration of a body is opposite in direction to its…

A: Velocity of a body is defined as rate of change of displacement with time. And acceleration of a…

Q: If you threw a rock straight up, it will come to a stop momentarily at the top of its path.  Is it…

A: No the stone will not be in equilibrium.If the stone was in equilibrium it should remain there at…

Q: A passenger sitting in the rear of a bus claims that she was injured as the driver slammed on the…

A:

Q: 38 It is commonly observed that when a loaded truck stops as it ascends and inclined road, an object…

A: This question can easily be solved by applying the basic concept of Rolling motion and friction .

Q: - A softball of mass 250 gm is thrown with an initial velocity of 16 m sec at an angle 0 to the…

A:

Q: A passenger sitting in the rear of a bus claims that she was injured as the driver slammed on the…

A: Given statement : A passenger sitting in the rear of bus is injured as a suitcase come flying…

Q: F4-33. Replace the loading system by an equivalent resultant force and specify where the resultant's…

A: As we are taking moment about A ,               By×4=20×2+15×45×2-15×35×6By=2.5 kN

Q: In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and…

A: Consider the mass of the car and rider be m, its initial and final velocity be u and v,…

Q: Suppose you are driving a car at a high speed. Why should youavoid slamming on your brakes when you…

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Q: In the Jurassic Park sequel, The Lost World, a man tries to keep alarge vehicle from going over a…

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Q: If a Mack truck and a motorcycle have a head- on collision, upon which vehicle is the impact force…

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

Q: A train typically requires a much greater distance to come to rest,for a given initial speed, than…

A: According to the problem, a statement is given in question we consider the mass of the train is much…

Q: 59. 59. A block of mass 4m can move without friction on a horizontal table. This block is attached…

A:

Q: What is a practical example of how a body can still accelerate even without changing its speed?

A: Concept :- When a body of mass m moves in a circular path of radius r with uniform speed v then the…

Q: Why would a truck take longer to accelerate when the driver hits the gas if it were loaded with…

A: From Newton's second laws, Force = mass × acceleration  So, for a given force , greater the mass ,…

Q: A net force F=(3t^2-2t+1)i+(2t-3)j N is acting on an object of mass 0.1 kg. Determine the magnitude…

A: Given data: Net force,F=3t2-2t+1i^+2t-3j^ Mass of the object, m=0.1 kg Time, t=2 s

Q: If the body is under uniformly accelerated motion, which of the following is constant?   Speed…

A: Say we have a body which has an uniform acceleration a. We know that acceleration of a body is given…

Q: A 6.00-kg block and an 8.00-kg block are connected as shown. When released, the 6.00-kg block…

A:

Q: If a bird collides with the windshield of a fast-moving bus, which one experiences an impact force…

A: Newtons third law states that for every action there will be an equal and opposite reaction force.…

Q: The force acting on an object in projectile motion are the same as those acting on an object in…

A: The answer for the given problem is

Q: Why are cars designed to crumple in front and back for safety? Why not for side collisions and…

A: The cars are designed to crumple in front and back for safety. The crumple zones redistributes force…

Q: A car is traveling at 100 km/h along a straight, level road when its brakes become locked. Determine…

A: Initial speed of car: u = 100 km/h = 100 x 0.2778 = 27.78 m/s Final speed of car: v = 0 m/s…

Q: The velocity of a body of mass 20 kg increases from 5 m/s to 20 m/s in a distance of 100 m. The…

A:

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: