Suppose you drop a metal ball from the top of the building that is 250  meters high. The ball has a MASS of 2 kg and the resistance force is given by 4v How long will take the ball to reach the ground? What will be its velocity at that time?

Q: A student uses two springs for the experiment. The force constant of the thin spring (k,) is 0.01…

A: Write the given values with suitable variables. k1=0.01 N/mk2=0.25 N/mΔL=25 cm=0.25 m Here, k…

Q: A steel ball of mass 3-kg is dropped from rest from the top of a building. If the air resistance is…

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Q: A roller coaster at the top of a 65.2m tall hill with a speed of 0 m/s. What is its speed in m/s…

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Q: An electron's position is given by r= 9.7ti+ 9.0 tj witht in seconds and r in meters. What is the…

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Q: It took an object 50 seconds to move from point A to B, then to C. If point B is 10 m, east of point…

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Q: Suppose you drop a metal ball from the top of the building that is 250 meters high. The ball has a…

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Q: An apple, starting at rest, falls from a tree branch 2.0 m above the ground. When the apple hits the…

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Q: During a water balloon fight at a college dormitory, a student drops a 0.80-kg water balloon from a…

A: Given data: m=0.8 kgv=14 m/s Need to determine the height of the window.

Q: A skier traveling 13.2m/s reaches the foot of a steady upward 19.70975 incline and glides 20.29696m…

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Q: A flower vase on a table slides off horizontally with a speed of 1.50 m/s. It statter in pieces on…

A: Given data: Initial velocity (u) = 1.50 m/s, horizontally Time (t) = 0.450 s Required: The height of…

Q: 37. The work-energy theorem states that the change in the kinetic energy of an object is equal to…

A: Let the mass of an object = m Let the initial velocity of an object = u Let the final velocity of…

Q: Determine the power required to move an object that weighs 800 N a verticaldistance of 4 m in 2 s.…

A: Power is defined as the rate of doing work. P=wt If a force F causes a displacement d in the object,…

Q: m 30°

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Q: upward. The shell has  an initial velocity of 40 m/s. Determine the maximum height  to which it…

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Q: What is its maximum height if there were no air resistance?

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Q: 3. One watt is equivalent to one (1) N•m (2) N/m (3) J•s (4) J/s

A: 'Watt' is the unit of power. Power is defined as energy per unit of time.                    Power…

Q: Same situation as in the previous problem this time the magnet has mass 7.25 kg, the force pulling…

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Q: What is the speed of an electron having the same kinetic energy with a proton with sneed 0 .0022

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Q: A student uses two springs for the experiment. The force constant of the thin spring (k,) is 0.01…

A: First calculate the equivalent spring constant in series.

Q: A 70.0 kg diver steps off a 10.0 m tower and drops straight down into the water. If he comes to rest…

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Q: An object of mass m which is hang (by means of a string of negligible mass) at the surface of a…

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Q: b) a=0.195 m/s', T=49.98 N No friction e- 32

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Q: A roller coaster is moving at 13 m/s at the top of the first hill (h= 53 m). Ignoring friction and…

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Q: A skier traveling 12.1m/s reaches the foot of a steady upward 12.43318 incline and glides 25.04093m…

A: we have , from work energy theorem. 0-0.5mv2 =-mgh-Wf -0.5m*12^2=…

Q: Q. A 980 W electric motor lifts a 50 kg safe at a constant velocity. Find the vertical distance…

A: The distance can e determined by, F=mgF=50×9.8F=490N

Q: A ball rolled 12.0 m [E] in 10.0 s, hit an obstacle, and rolled straight back. After the collision,…

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Q: Same situation as in the previous problem this time the magnet has mass 7.88 kg, the force pulling…

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Q: After enjoying his stay in London, Vaan wanted to head to the airport, which is 5.73 km 14° S of W…

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Q: The IKAROS spacecraft, launched in 2010, was designed to test the feasibility of solar sails for…

A: Given,  Force =1.12 mN Mass of spacecraft= 290 Kg We have to find the increase in speed after 7…

Q: A snooker ball of mass 0.2 kg is struck so it starts moving at 1.2 m/s. As it rolls, the table…

A: Given: The mass of the ball is 0.2 kg. The velocity of the ball is 1.2 m/s. The contact resistance…

Q: With no losses in the string-pulley system, calculate the force (in Newtons) Alice must pull on the…

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Q: A car moving at 50km/h skid 15m with locked brakes. How far will the car skid with locked brakes at…

A: Given information:Given initial speed (u1) = 50 kmphFinal speed (v1) = 0 kmphDistance it slides (s1)…

Q: A man in a sled, with a total mass of 125 kg, slide down a grassy hill and reaches a speed of 8 m/s…

A: Given: Mass of man and sled , m = 125 kg Initial speed, vi = 8 m/s Final speed, vf = 0 Force exerted…

Q: A tumbleweed rolls off a 120m high cliff with a speed of 23.6 m/s. What would the final velocity of…

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Q: A stone is thown from the top edge of a cliff with an initial speed of V0 = 15 m/s . The stone takes…

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Q: A toy is dropped from the top of a tower that is "h" meters high. It falls and its speed just as it…

A: Given data :- initial velocity u = 0 final velocity v = 6.5 m/s height = h

Q: Why sand is thrown on the tracks covered with snow?

A: If the tracks are covered with snow then there is a substantial reduction in frictional force…

Q: 1 kW = ? A) 1000 W B) 10 W C) 100 W D) 10000 W

A: Watt is the unit of power. The power is defined as the work done in a unit time interval. The…

Q: Your answer is partially correct. A skydiver weighing 266 Ibf (including equipment) falls vertically…

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Q: A helicopter is delivering food in an emergency situation, where it is difficult to land. The…

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Q: 11/Water drips from rest from a leaf that is 20 meters above the ground." Neglecting air resistance,…

A: Given: The intial speed of the drop is 0 m/s. The height of the water drop from the ground is 20 m.…

Q: A roller coaster car starts from rest and descends from the top of a 40 m hill. If the car has a…

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Q: The mechanical energy of an * :object is given by 1/2mv*v O EK+EP O Ek1+EP1=Ek2+EP2 O O O O

A: Mechanical energy is defined as the sum of energy possessed by motion (K.E) and energy possessed by…

Q: A boat is being towed at a rate of 20 kph. At the instant (t-0) that the towing line is cast off, a…

A: Solution: Given that vi  =20 kmph = 5.55 m/s F1 = 90 N F2 = 26.25 v m = 225 kg

Q: An electric winch is designed to lift a mass of 330 kg vertically from the ground to a height of…

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Q: If a 1 kg ball and a 5 kg ball of the same size are dropped from a height of 3 m at the same tims…

A: The air resistance of a falling object depends on the area of the cross-section. Therefore more the…

Q: An object (of unit inertia) is moving in a potential well U(x) = ax², where a = 1. At t=0 the object…

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Q: With no losses in the string-pulley system, calculate the force (in Newtons) Alice must pull on the…

A: Given: The mass of the object is 47 kg  The motion of the objet is uniform. Introduction: Here,…

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.