what is the velocity of a rollercoaster at the bottom of the track that is 49.5 m high if it starts from rest?

Q: 46. Neglecting air resistance and taking g as 10 m s², the height fallen by a fruit from rest to a…

A: Recall Vf2=Vi2+2ghWhere h is required heightVf=10m/s Vi=0

Q: a 2000-kg car initially at rest is held by a friction force that can resist up to 1200 N. If the…

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Q: A car moving at 20 m/s crashes into a tree and stops in 0.26s. Calculate the force the seat belt…

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Q: A 12.5 kg object falling towards Earth has a velocity of 2 m/s when it is 100 m above the ground.…

A: Write a given values of this question.

Q: An object of mass 5kg is sliding with a constant velocity of 10m/s on a frcitionless horizontal…

A:

Q: Sandra pushes from the front while Shirley pushes a wagon with Heather riding with a net force of 50…

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Q: A Yamaha bike accelerates from the stoplight (from Om/s) at 8 meters per second per second, its…

A: Given data:  Initial velocity (V0) = 0 m/s Acceleration (a) = 8 m/s2 Time (t) = 6 seconds Required:…

Q: A 100 kg desk is pushed across a floor at a constant speed of 1m/s. How much the employee do on the…

A: Mass of desk (m) = 100 kg initial constant speed of desk (u) = 1 m/sfinal speed (v) = 4 m/s

Q: Katie pushes on a 10 kg box with 70 N of force, but the box only accelerates by 3 m/s?. How much…

A: Given Data : The mass of the box is given as m = 10kg. The force applied to the box is given as Fa =…

Q: The net force on a 10 kg object is 40 N.  If it is initially moving at 18 m/s, how long will it take…

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Q: A 9900 N small car is moved by a 650 N force. If the car starts from the rest, then how fast is it…

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Q: A bottle falls from a place with a height of 1200m,  assuming g=10m/s^2 if there was no air…

A: Given data:  Initial velocity (Vi) = 0 m/s, dropped Height (h) = 1200 m Acceleration (g) = 10 m/s2,…

Q: Rank the speed from slowest to fastest. A A B C D b = 60m r = 20m D B C E

A: Given :  distance , b = 60 cm  Radius , r = 20 cm  Find : Rank speed from slowest to fastest

Q: A small heavy object is dropped from the top of a cliff 600 ft. high. With what velocity will it…

A: Given Data : The height of the cliff is given as H = 600 ft.

Q: ! A block falls from rest off a building that isy= 186 m tall.

A: Given to us is,            Height from which the block falls(S) = 186 m…

Q: If a skydiver jumps from a plane and free falls, what is their velocity after 20 seconds?

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Q: Fleas have remarkable jumping ability. A 0.50 mg flea, jumping straight up, would reach a height of…

A: Due to the air resistance, some of the kinetic energy will be spent to do work against the…

Q: What is the gain in speed per second for a freely falling object?

A: The gain in the speed of a freely falling object can be measured by calculating the change in the…

Q: An object of mass 5kg is sliding with a constant velocity of 10m/s on a frcitionless horizontal…

A: mass m=5Kg velocity v=10 m/s To find: Force needed to keep the object moving with same velocity=??

Q: What is the velocity of a rollercoaster at the bottom of a track that is 70.5m high if it starts…

A: Given data: height of the track, h=70.5 m final velocity of the roller coaster, v=?

Q: The driver of a 1000 kg car traveling at a speed of 16.7 m/s applies the brakes. If the brakes…

A: Write the given values with suitable variables. m=1000 kgu=16.7 m/sv=0 m/sF=-8000 N Here, m denotes…

Q: A truck with velocity 33 m/s turned a corner too sharp and lost part of the load. A falling box will…

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Q: What is the velocity of a rollercoaster at the bottom of a track that is 60 m high if it starts from…

A: Given :      Height, h1 = 60 m      Initial velocity, v1 = 0 m/s      At bottom, height h2 = 0 m

Q: A brick is dropped for rest on a high scaffold, whats its velocity after 2.1s and how far has it…

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Q: Mike pushes a box with a mass of 5.97 kg giving it an initial velocity of 2.64 m/s. The box comes to…

A: Given :- The mass  m= 5.97 kg  The initial  velocity u = 2.64 m/s  Final velocity v = 0 m/s…

Q: A 75 kg diver steps off of a 10 m diving platform. What is their velocity when they are 5 m above…

A: The given data are: m=75 kgH=10 mh=5 m Here, m denotes the mass, H denotes the platform's height,…

Q: It has been found that a 1500 kg car can stop in 32 m from a speed of 20 m/s. How much force do the…

A: The car's motion is, m=1500 kg The initial speed of the car is, u=20 m/s The distance traveled by…

Q: A 30 kg boulder was initially moving at a velocity of 10 m/s, in order to stop it 10 N of constant…

A: Given, m = 30 kg. Retarding force = -10N u = 10 m/s v = 0.

Q: A car hits a bug with a force of 100N. With how much force does the bug hit the car?       10 N…

A: The correct option is (2).  i.e   100N

Q: A box of mass 10 kg is on the back of a flatbed truck. The tručk now travels down a 10° hill with an…

A: Mass of box on the back of the flatbed truck,(m)=10 kg-----(1) [Given] Now on traveling downhill,…

Q: A 12 g bullet is accelerated from rest to a speed of 700 m/s as it travels 20 cm in a gun barrel.…

A: The acceleration of the bullet from kinematics, v2=u2+2as7002=02+2a0.2a=1.23×106 m/s

Q: 3. Ône company claims that their 1200-kg car can accelerate from rest to a speed of 25 m/s in a time…

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Q: A 510 kg elevator accelerates upward at 1.5 m/s? for the first 11 m of its motion.

A: solution is given as

Q: velocity of 10 m/s on a leve the floor, it takes 2.0 s for the block to come to rest. Wha and the…

A:

Q: A 55.0-kg lead ball is dropped from the Leaning Tower of Pisa. The tower is 55.0 m high. What is the…

A: Equation of kinematics is as follows; v=v0+gt                                              1) where,…

Q: A bowling ball has a mass of 7.0 kg and a velocity of 5.5 m/s. What is the force needed to stop the…

A: Given data:  Mass (m) = 7.0 kg Initial velocity (Vi) = 5.5 m/s Final velocity (Vf) = 0 m/s Time (t)…

Q: Compute for the force on a 975 kg car moving from 12 m/s to 27 m/s in 15 s.

A: Answer  Given  Mass of the car m = 975 kg Final velocity vf = 27 m/s Initial velocity vi = 12 m/s…

Q: A child of mass 26 kg , is sliding down a water-slide that has an angle of 32 deg. If the water…

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Q: A 2 kg mass experiences a force F=3+2x in the x direcntin.  What is the final velocity at x=1 m if…

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Q: What is the acceleration of a 15 kg box sliding down a 30 degree (to horizontal) slope if the Uk is…

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Q: how much force must be applied to accelerate a 12kg object at 1.5m/s

A: According to Newton’s second law, the force that causes acceleration is,

Q: ayab on his heavy bike drives for 2 h at 100 km/h and for 3 h at 30 m/s. His average

A: Suppose Tayab on his bike travel distance (D1) & (D2) in kilometer in two different intervals of…

Q: Greg is diving of the 20 m board. As he falls gravity pulls him with a weight of 800 N. 100 n of…

A: Given data:   Weight (W) = 800 N Friction force (f) = 100 N, against the motion Required: The net…

Q: An object of mass 5kg is sliding with a constant velocity of 10m/s on a frcitionless horizontal…

A: Answer => a. 0

Q: A car moving at 25 m/s crashes into a tree and stops in 0.3 s. Calculate the force the seat belt…

A:

Q: What is the velocity of a rollercoaster at the bottom of a track that is 43.2 m high if it starts…

A: Given, height h=43.2 m PE at the top =mgh=43.2mg Initial velocity u=0 KE at the top=0 PE at the…

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: