51. I| A 2.0 kg wood block is launched up a wooden ramp that is inclined at a 30° angle. The block's initial speed is 10 m/s. a. What vertical height does the block reach above its starting point? b. What speed does it have when it slides back down to its starting point?

Q: 60.0 kg skier is moving down a snowy hill inclined at 5 degrees above the horizontal with an…

A: mass of skier (m) = 60 kg initial angle of inclined hill (θi) = 5oinitial acceleration = 0.4 ms2

Q: 1. A roller coaster car starts from rest at the top of a track 30.0 m long and inclined at 20.0° to…

A: Given: The length of the track is 30 m. The inclination of the track is 20°. Introduction: A body…

Q: 6. A crate whose mass m is 250 kg rests on the bed of a truck that is moving at a speed v, of 100…

A:

Q: 1. If the body starts from rest at A and slides 200 ft down the 30⁰ incline, how far will it then…

A:

Q: a woodpecker’s brain is specially protected from large accelerations by tendon-like attachments…

A: SOlution: Given that initial velocity u = 0.6 m/s final velocity v = 0 d = 2 mm

Q: tension (in N) Pope at a constant speed ? (No Response) N (b) What is the tension (in N) in the rope…

A: Concept: How fast an object is moving is called speed, speed can be thought of as the rate at which…

Q: A woodpecker’s brain is specially protected from large accelerations by tendon-like attachments…

A:

Q: An object of mass 45 kg is drawn upward an inclined plane by a force of 600N. The coefficient of…

A:

Q: 15. What is the position along x-axis where net force on test +q is zero? A. 0.25 m B. 0.1 m C. 0.45…

A: The force between two charged particles is given by: F12 = 14πε0q1q2r122r12^ Null points are the…

Q: 16b. If a penguin, traveling at 14 m/s, hits a level patch of sandy beach with a coefficient of…

A:

Q: (II) An object starts from rest and falls under the influence of gravity. Draw graphs of (a) its…

A: Given data: The initial velocity of the object is: u = 0 The final velocity is: v The gravity…

Q: (1b) A worker grabs a 68 kg crate across a floor by Pulling on a rope inclined 17º above the…

A: Here given a workergrabs a 68 kg crate.The rope inclined 17° above the horizontal. The coefficient…

Q: A horizontal rope is tied to a 50 kg box on frictionless ice. What is the tension in the rope ifa.…

A: Let the mass of the body be m, acceleration is a, velocity is v, force on the system is denoted be…

Q: 22. An object with a mass of 25 kg is falling in air and experiences a force due to air resistance…

A: Given, mass of the object m = 25 kg Force due to air resistance fr = 60 N   We know the expression…

Q: 1. Two forces of 4.0N, east; and 3.0N, northeast, act on a particle. Find the resultant force acting…

A:

Q: 1. A loaded elevator, 2200 kg, supported by cables that can withstand a maximum tension of 28,000 N…

A:

Q: 1 A 120-lb person stands on a bathroom spring scale while riding in an elevator. If the eleva- tor…

A: Weight of a person is equal to 120 LB For part a elevator accelerated upward with acceleration  g/4…

Q: (II) What will a spring scale read for the weight of a 58.0-kgwoman in an elevator that moves (a)…

A:

Q: (II) A 14.0-kg bucket is lowered vertically by a rope in which there is 163 N of tension at a given…

A:

Q: B. how much tension must a cable withstand if it is used to accelerate a 120 kg car vertically…

A:

Q: A car is travelling at 50.0 km/h on a flat highway. (a) If the coefficient of frictin between road…

A: Given :  vo = 50.0 km/h = 50.0(1000/3600) = 13.9 m/s v = 0 m/s (because finally the car stops)

Q: (1) A mug rests on an inclined surface, as shown. (a) What is the acceleration of the mug if there…

A: Given data: Mass of the mug, m=0.27 kg Angle, θ=140

Q: Help

A: The vertical displacement is h=640 m The acceleration is a=4.40 m/s2 The velocity in the upward…

Q: You walk into an elevator, step onto a scale, and push the "down" button to go directly from the…

A: Given data The normal weight is W = 615 N The magnitude of the acceleration is a = 2.45 m/s2

Q: (II) The cable supporting a 2125-kg elevator has a maximumstrength of 21,750 N. What maximum upward…

A:

Q: 1. (a) A 1200 kg car accelerates from 35 m/s to 10 m/s in 5.0 seconds. (i) What is the acceleration…

A:

Q: 1. Determine what the force F must be for the box to accelerate at 2m/s^2 M= F=?

A: According to guidelines we need to solve only first question kindly repost other questions in the…

Q: A 75.0 kg man stands on a platform scale in an elevator. Starting from rest, the elevator ascends,…

A:

Q: I don't understand this question. I have looked up the answer listed on the website and i'm hoping…

A: a) The required acceleration when accelerating upward is, b) The required acceleration when…

Q: (d) If the rope connecting A and B were cut, what would be the acceleration of C? (Ans: 1.54 m/s²)

A:

Q: need help

A: 1.b The body diagram of the first condition is shown below.

Q: (III) A pilot performs an evasive maneuver by diving vertically at 270 m/s .If he can withstand an…

A: Using kinematics, 2as=vf2-vi2s=vf2-vi22a

Q: A 20-kg object dropped in the air has a terminal speed of 60 m/s, what was its acceleration at 30…

A: At terminal velocity, the net force on the object is zero. Fnet = 0W = Fdmg = kvterminal…

Q: 1.) A 100-lb block slides down a frictionless inclined plane at an angle of 60° with the horizontal.…

A: As you didn't say about which question to solve so we are solving the first one.   The FBD of this…

Q: A 70 kg man drops to a concrete patio from a window only 0.55 m above the patio. He neglects to bend…

A:

Q: A 500 kg trailer being pulled behind a car is subject of a 100 Newton resistance force due to…

A: a)The required force at a constant speed,

Q: 1. A 100-lb block slides down a frictionless inclined plane at an angle of 60 with the horizontal.…

A: Consider an object of mass m pulled upward by with a tension T=150 lbf. The body weighs W=mg…

Q: 1. If the body starts from rest at A and slides 200 ft down the 30° incline, how far will it then…

A:

Q: 10.  An object weighing 4.6 N falls from rest subject to a frictional drag force given by Fdrag =…

A: (10) The frictional drag force is, Rewrite the above relation for terminal speed of the object.

Q: 76. A rescue helicopter is lifting a man (weight = 822 N) from a cap- sized boat by means of a cable…

A:

Q: 7. The tension in a string from which a 4.0-kg object is suspended in an elevator is equal to 44 N.…

A: Given data: Mass of the object m =0.4 kg Tension of the string T=44N

Q: An object of mass 45 kg is drawn upward an inclined plane by a force of 600N. The coefficient of…

A:

Q: 3. A 75 kg block is pulled along the floor with a horizontal force of 100 N at a constant velocity.…

A:

Q: 2. Consider a skydiver who has stepped from a helicopter and is falling through air. Before she…

A: When the skydiver jumps from the helicopter, the initial velocity of the skydiver is zero.

Q: A 3kg takes off from rest. Its propeller (rotor)exerts a vertical thrust of 150N. a. What is the…

A: Force brings about motion and changes in it. This net force produce acceleration and hence the…

Q: (1) How much tension must a rope withstand if it is used to accelerate a 960-kg car horizontally…

A: mass of car , m = 960 kg acceleration of car , a = 1.2 m/s2  The car is being accelerated by the…

Q: A skydiver reaches a terminal velocity (i.e constant velocity) of 200 km/ h after a few seconds from…

A: When the skydiver reaches his terminal speed, the speed no longer changes and hence, remains…

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.