What is the velocity of a rollercoaster at the bottom of a track that is 70.5m high if it starts from rest

Q: a jet with a mass of 4,450 kg is powered by an engine with a force equal to 59,700 N. It is…

A: Given Data: The mass of a jet is, m=4450 kg The force applied is, F=59700 N The acceleration of a…

Q: A 300kg weight is held aloft by a rope that passes over a pulley and is then tied down. A 100 kg…

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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 2000 Kg car travels from rest to a speed of 25 m/s on a flat stretch of road. What is the force…

A: Given: The mass of the car is 2000 kg. The initial velocity of the car is 0 m/s. The final speed of…

Q: A 2.44 kg road runner skids to a stop, from an initial velocity of 6.85 in 2.23 s. What was the…

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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: What is the net force on a 3 kg bag that is pulled up with a force of 50 N: Select one: a. 28 N up O…

A: Given data:  Mass of bag(m) = 3 kg Force applied (F) = 50 N, upward

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: the force

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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: A force of 900 N is applied to a 9kg object.  How fast will it accelerate?

A: The given data are: F=900 Nm=9 kg Here, F denotes the force and m denotes the mass.

Q: What is the initial velocity of a 80 kg cyclist if she travels 55 m at a constant acceleration of…

A: The distance traveled by the cyclist is, d=55 m The final velocity of the cyclist is, v=0 m/s The…

Q: dancer's acceleration

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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: Choose the BEST answer to the following: Lift a 100-N crate with an ideal pulley system by pulling a…

A: Step 1Work done by a body is the product of force on it and the displacement produced by it.Let F be…

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: On a 119 meter high roller coaster is a 75 kg car at rest. Assuming there is no friction, what will…

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Q: A skydiver jumps out of a helicopter and falls freely for 5.2 s before opening the parachute…

A: Write the given values with suitable variables. u=0 m/st=5.2 s Here, u denotes the initial velocity…

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: A 8.0 kg block is moving at 3.2 m/s. a net force of 10 N is constantly applied on the block in the…

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Q: An object with a mass of 6 kg is acted upon by a force of 50 N for 8 s. What is the final velocity…

A: Given: Mass of object m = 6 kg Applied force F = 50 N Time Interval t = 8 s Initial velocity u = 4…

Q: Zach, whose mass is 80 kg, is in an elevator going down at 6.0 m/s. The elevator takes 2.0 s to stop…

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Q: You drop a 10 Ib bowling ball and .1 lb piece of paper with air resistance. Which object will hit…

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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: 6) A 75 kg skier is motionless at the top of a 33 m tall hill. How fast will the skier be travelling…

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Q: Starting from rest, a 940 kg racing car covers 400 m in 4.95s. Find the average force on the car.

A: Given data:  Mass (m) = 940 kg Initial velocity(v0) = 0 m/s Displacement (x) = 400 m Time (t) = 4.95…

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: 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 skydiver jumps out of a helicopter and falls freely for 1.2s before opening the parachuteWhat is…

A: Given :-  time for which skydiver falls freely     t = 1.2 sec  initial velocity u =0 m/s…

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 sled is given a shove up a frictionless 60° incline. It reaches a new plateau 10m higher than it…

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Q: = 8.5 s before opening his parachute. rs in t2 = 127 s. See the figure.

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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: 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: A skydiver jumps out of a helicopter and falls freely for 1.2s before opening the parachute. What is…

A: Given data: Time t=1.2s Acceleration due to gravity g=9.8 m/s2 Initial velocity u=0

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: A cart being pushed up a 50 degree ramp with a speed of 40m/s. What is the vertical speed in m/s?

A: Given data: Speed of the cart on the ramp v = 40 m/s The angle of the ramp = 50 degree. Need to…

Q: A cheerleader lifts his 68 kg partner straight up off the ground a distance of 0.72 m before…

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

A: Answer => a. 0

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…