Disregarding friction, a roller coaster with a vertical drop of 46 m will achieve a speed of about 30 m/s. If the height of the drop is doubled, how much the speed is going to be?

Q: At the Earth’s surface, a projectile is launched straight up at a speed of 10.0 km/s. To what height…

A: Since given speed is very high, So we need to consider gravitational effects on the projectile too.…

Q: Grug is a creature formed from the top of a Burrawang tree, standing -1.25m tall. One day, Grug…

A: Given: h1=2.7 m h2=60 cm =0.6 m initial velocity v1=0 m/s

Q: A cart rolls up a hill along a frictionless track. The speed of the cart at the bottom of the hill…

A:

Q: You drop a 2.80 kg book to a friend who stands on the ground at distance D = 14.0 m below. Your…

A: Given, Mass of book = 2.80 kgheight of drop, D= 14.0 mheight of person, d=1.30 minitial speed = 2.30…

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…

A:

Q: An empty rollercoaster car has a mass of 3,000 kg and is released from rest at the top of a 40 m…

A: Given: The mass of the rollercoaster is 3000 kg. The height of the hill is 40 m.

Q: A package with a mass of 50.0 kg slides down a smooth ramp with negligible friction. The package…

A: Using conservation of energy : initial potential energy = final kinetic energy mgH = (1/2) m (v)2…

Q: A pendulum bob is released from some initial height such that the speed of the bob at the bottom of…

A: Epotential=Ekinetic      mgh=12mv2           h=v22g

Q: A 14 kg penguin slides on its belly down an icy, frictionless glacier. If the penguin started from…

A: Write the given values of the problem- Mass=14 kg final speed(vf) vf=14 m/s

Q: 102 kg man is skiing across level ground at a speed of 9.5 m/s when he comes to the small slope 1.4…

A: Given:- The mass of the person m = 102 kg  The speed of the skis at the ground level vg = 9.5 m/s…

Q: A child on a sled with a total mass of 58.0 kg slides down an icy hillside with negligible friction.…

A: According to law of conservation of energy, when the sled starts sliding from the hilltop, the…

Q: You drop a 1.50 kg book to a friend who stands on the ground at distance D= 12.0 m below. Your…

A: Given: D=12.0 m d = 1.80m m = 1.5kg

Q: A 79.0-kg skier starts from rest from the top of a 50-m high slope. What is the speed of the skier…

A: Givenheight, h=50 mmass, m=79 kginitial speed, u=0we can use conservation of mechanical energy here…

Q: A kid on a bike goes from the bottom to the top of a 25 m hill. What minimum speed would the kid…

A: h=25 m.

Q: A parachutist weighing m=70kg (including equipment) falls vertically from a height of 1500 meters…

A: Given data: The mass of parachutist is m=70 kg. The vertical height is h=1500 m. The coefficient of…

Q: At the Earth's surface, a projectile is launched straight up at a speed of 6.3 km/s. To what height…

A: Given data The speed of the projectile is u = 6.3 km/s = 6300 m/s   The expression for energy…

Q: A cart which has a mass of 20 kilograms slides down a frictionless slope of a hill. If the cart…

A: Given value--- mass = 20 kg. speed at bottom = 15.6 m/s. We have to find --- height?

Q: If the skier coasts up the hill, what is his speed (in m/s) when he reaches the top plateau? Assume…

A: Energy can neither be created nor destroyed. It is simply converted from one form to another and the…

Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

A:

Q: A 104 kg man is skiing across level ground at a speed of 8.3 m/s when he comes to the small slope…

A: Given that,                     initial velocity(vi)=8.3m/s                     mass of man(m)=104kg…

Q: You drop a 1.40 kg book to a friend who stands on the ground at distance D = 13.0 m below. Your…

A:

Q: You drop a 2.90 kg book to a friend who stands on the ground at distance D = 13.0 m below. Your…

A: Mass of the book (m) = 2.90 kg Distance of ground (D) = 13 m distance of hands above the ground (d)…

Q: A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x0. The…

A: Given values: Equation of y, y=x2d           for x<0y=-x2d       for x>0 Value for d = 2.10 m…

Q: The top of a ski hill sits at an altitude of 2000 m. If you were to "Frenchfry" (go straight down…

A: Here, we have to Use Conservation of energy As difference in altitude is given, we just have to…

Q: Grug is a creature formed from the top of a Burrawang tree, standing ~1.25m tall. One day, Grug…

A: Given : H=2.6 m, h= 0.69m

Q: A 108 kg man is skiing across level ground at a speed of 9.5 m/s when he comes to the small slope…

A: Mass of man (m) = 108 kg Initial speed (u) = 9.5 m/s Height of final level above the ground (h) =…

Q: A 60.0 kg skier with an initial speed of 16.5 m/s coasts up a 2.50 m high rise as shown in the…

A:

Q: A pebble is released from rest at a certain height and falls freely, reaching a speed of 4 m/s at…

A: Given :             A pebble at rest u = 0                          speed   v = 4 m/s…

Q: You drop a 2.20 kg book to a friend who stands on the ground at distance D = 15.0 m below. Your…

A: Given, mass of the book, m = 2.20 kgdistance, D = 15.0 mfinal distance, d = 1.30 m

Q: A cylinder was dropped vertically from rest in a very high, evacuated tube near the surface of the…

A:

Q: A roller-coaster car is moving at 20 m/s along a straight horizontal track. What will its speed be…

A:

Q: You drop a 2.20 kg book to a friend who stands on the ground at distance D = 11.0 m below. Your…

A:

Q: A 60.0 kg skier with an initial speed of 12.5 m/s coasts up a 2.50 m high rise as shown in the…

A: Given:Mass of the skier = 60 kgInitial speed of the skier = 12.5 m/sHeight of the ramp = 2.5…

Q: You drop a 1.90 kg book to a friend who stands on the ground at distance D = 12.0 m below. Your…

A:

Q: A roller coaster cart of mass m = 241 kg starts stationary at point A, where h1 = 39.4 m and a while…

A:

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.