A 500 kg roller coaster car is moving at the top of a 20 m high hill. If its velocity at the bottom of the hill is 50 m/s and the bottom of the hill is 5 m above the ground, what is its velocity at the top of the hill?

Q: A 9.6 kg ball is rolling at a speed of 3.8 m/s when it encounters a ramp. How high can it roll up…

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Q: what is the potentil engery for a 0.5 kg ball lifted 2 m above the ground?

A: Given, mass m = 0.5 kg height h = 2 m We know the expression for potential energy is  P.E=mgh

Q: If a 6 kg mass is dropped from a height of 10 meters, what is the velocity of the mass right before…

A: In the given question the mass of the mass is given is 6kg and height is also given 10 meter from…

Q: A 5 kg cart is at the top of a 7 m hill moving at 5 m/s. What is its velocity at the bottom of the…

A: Express the relation for the total initial mechanical energy, Etop, of the cart at the top of the…

Q: A Trapeze artist steps off a platform and swings downward. At the bottom of her swing, she is moving…

A: Initial velocity when the trapeze artist steps off the platform (u) = 0 msvelocity at the bottom of…

Q: How much force is needed to accelerate a 50 kg skier at 3 m/sec?

A: Write the given values with suitable variables. m=50 kga=3 m/s2 Here, m denotes the mass and a…

Q: what is the speed does a meter stick move if its length is observed to shrink to 0.5 m?

A: Given data:  Original Length (L0) = 1 m Contracted length (L) = 0.5 m Required: The speed (v) of the…

Q: A 1000kg car traveling at 35 m/s takes 9 m to stop under full braking The same car under similar…

A: Given data *The mass of the car is m = 1000 kg *The initial speed of the car is u = 35 m/s *The…

Q: What force is needed to accelerate a 1900 kg car at one-third of g?

A: given :- mass of car m=1900 kg  acceleration due to gravity=g= 9.8 m/s2  acceleration of car a=…

Q: A 1,320 kg car moving at 14 m/s on dry pavement, skids to a stop over 145 m. What is the force of…

A: Write the equation for the kinetic energy. KE=12mv2 Here, The mass of the car is "m" The speed of…

Q: A hockey puck is hit on a frozen lake and starts moving with a speed of 14.1 m/s. Five seconds…

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Q: A bird is flying at 4 m/s that encounters a breeze blowing at 4 m/s in the same direction, what is…

A: Given- Speed of bird (VB) = 4 m/s, Velocity of blowing wind (VW) = 4 m/s

Q: An aircraft is preparing to take off, so it is at rest. The airplane runs 8,000 feet on the runway…

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Q: A rock (weight 25 N) is suspended from a cable attached to the ceiling of a moving elevator. If the…

A: Given- Weight of rock W= 25 N The tension in the cable T=20 N

Q: A student drops a water balloon out of a dorm window 27 m above the ground. What is its speed when…

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Q: A 1200 kg car is travelling at 25 m/s and hits a wall. If the wall applies 45,000 N of force to the…

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Q: if a 6kg mass is dropped from a height of 10 meters, what is the velocity of the mass right before…

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Q: The kinetic energy E of an object varies jointly with the object’s mass m and the square of the…

A: The object’s kinetic energy can be represented as, Here, m, v, and k represent the object’s mass,…

Q: A 15 kg rifle fires a 100 gm bullet at 1,750 m/s. At what speed does the rifle kick back?

A: Using momentum conservation principle Initial momentum=Final momentum In this situation both rifle…

Q: A car moving at 70 km/hr skids 42 meters with locked brakes. How far will a car traveling initially…

A: initial speed (u) = 70 kmhr = 70×518 ms= 19.44 msFinal speed (v) = 0 kmhr = 0×518 ms= 0msDistance…

Q: A boy on a skateboard coasts along at 5 m/s. He has a ball that he can throw at a speed of 10 m/s.…

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Q: A boy uses a string to swing a 2 kg stone around his head. If the string is 1.5 m, and can bear a…

A: Given data:  Mass of stone (m) = 2 kg Length of string (L) = 1.5 m Maximum tension (T) = 2224 N…

Q: a 1 kilogram ball is dropped from the top of a building that is 180 meters high. what is the…

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Q: A 1200 kg car is moving at 30 m/s and comes up to a hill. How high can the car go up the hill before…

A: To solve the question, we will use the conservation of energy.

Q: What is the speed at impact of a stone that is dropped from a height of 60 meters? *

A: The third equation of motion is v2 = u2 + 2 g h where, u is the initial velocity, v is the final…

Q: A physics book slides off a horizontal tabletop with a speed of 1.10 m/s. It strikes the floor in…

A: Given data:  Book slides off  Initial velocity (V0) = 1.10 m/s Time (t) = 0.350 s Required: The…

Q: A ball is dropped from a building 100m high. If the mass of the ball is 10 grams, after what time…

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Q: A 1kg cannon ball is fired horizontally with an initial velocity of 5m/s. If the cannon was atop a…

A: Given: Mass of a canon m = 1 kg. Velocity of firing canon v = 5 m/s. height of canon h = 20 m.

Q: What is the kinetic energy of a car that is traveling at 16.5 m/s if it has a mass of 1,442 kg?…

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Q: If you shoot a 10 kg cannonball straight it reaches a height of 600 meters, what was the velocity of…

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Q: What is the momentum of an airplane that has a mass of 25,000 kg and is traveling at 40 m/s?

A: We have to calculate the momentum of an airplane that has a mass of 25,000 kg and is traveling at 40…

Q: How much force does it take to bring a 1,325 N car from rest to a velocity of 33 m/s in 11 seconds?

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Q: A 5.2 kg ball is rolling at a speed of 6.3 m/s when it encounters a ramp. How high can it roll up…

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Q: what is the change in velocity of a 22kg object that experiences a force of 15N for 1.2 seconds?

A: mass = 22 kg F = 15 N t = 1.2 seconds

Q: A 1200 kg car is travelling at 30 m/s and hits a wall. If the wall applies 48,000 N of force to the…

A: The answer is below

Q: A stalled 1,000 – kg car needs a push. Starting at rest, how hard do you have to push to get it up…

A: Given, Initial velocity, u=0 m/s Final velocity, v=10 m/s Time, t=100 s Mass, m=1000 kg

Q: How fast will a penny hit the ground if it is dropped from the rooftop of a 291-meter-high building?

A: The final speed, v of a object after it covers a distance x, moving with a intial speed, u and…

Q: A 3 kg mass slides down an inclined plane that has an angle of 25 degrees. It starts at rest and…

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Q: A 2-kg ball traveling eastward at 5 m/s hits a 5-kg ball moving at 1 m/s eastward.  The 2-kg ball…

A: Solution: Given that A 2-kg ball traveling eastward at 5 m/s hits a 5-kg ball moving at 1 m/s…

Q: A 3,500kg pickup truck is traveling eastward at a velocity of 15.0m/s when it collided into the rear…

A: Correct answer : The velocity of the car just after the collision is 20.67 m/s.

Q: A 50kg child is riding their 3kg skateboard down the street at 5m/s. The child jumps off the front…

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Q: wendy walks 10 m in one direction at 2m/s, then runs 6 m in the same direction at 6m/s. Next, she…

A: Total distance : d = 10 m + 6 m + (6 m/s x 4 seconds) d = 10 m + 6 m + 24 m d = 40 m

Q: Two objects moving towards each other stop after colliding. If the speed of a 5 kg object before…

A: Given data: The mass of the first object is given as Ma = 5kg. The mass of the second object is…

Q: A student slides a 2,50 kg textbook across a table, and it comes to rest after travelling 1.15 m.…

A: Given: Mass of the book: m = 2.50 kg Displacement of the book: d=1.15 m The friction coefficient…

Q: How much force does it take to bring a 1,075 N car from rest a velocity of 26 m/s in 14 seconds?

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Q: A bullet moving at a speed of 157 m/s passes through a plant of wood at 144 m/s. Another bullet…

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Q: A 20kg box is lifted 350m above the ground in 5 minutes.

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Q: If a baseball (m=.450 kg) is thrown up with a velocity of 8 m/s, how many meters high will it reach?

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