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 2000 kg ball falls from a height of 30 meters. a) How fast it is traveling when it is 7 meters off…

A: A) As per the conservation law of energy, Here, m, g, v, and h represent the ball’s mass, velocity,…

Q: An object is dropped on Earth (g = 10m/s/s).  How fast will it be going after 3 seconds?

A: Given:- An object is dropped on Earth and having acceleration due to gravity is 10 ms2 To…

Q: A baseball is dropped from the top of a 66 m tall building. Ignoring air resistance, how fast will…

A: Velocity of free fall motion V=√2gh  g = gravitational acceleration h =height

Q: The commander has asked you shoot cannonball off the side of a cliff that is 70 meters tall. The…

A: From the kinematics equation, the value of the displacement is: Substitute the known values and…

Q: A roller coaster car has a speed of v0 = 7.5 m/s as it reaches the peak of a h = 38.5 m drop. What…

A:

Q: A ball is thrown upward with a velocity of 20 m/s. What is the maximum height that the ball will…

A: Given : Initial velocity (vo) = 20 m/s

Q: A bored astronaut on an alien world launches projectiles at a nearby hill. The projectiles are…

A:

Q: There were 2 boys standing on top of a bridge. The 1st boy drops a 1.5kg rock while the 2nd boy…

A: h=ut+0.5gt2

Q: In order to slide a heavy cabinet across the floor at constant speed, you exert a horizontal force…

A: Since the body is moving with constant velocity there is no net force acting on the body. Since the…

Q: Neglecting air resistance, what is the speed of an object (in m/s) 1.7 seconds after being dropped…

A: Our question is to find the speed of an object which is falling freely from a height after 1.7 s

Q: A stone is thrown upward with a velocity of 10 m/s from a window 50 meters above the ground level.…

A:

Q: A cannon fires a shell traveling 150 m/s in the horizontal direction and 150 m/s in the vertical…

A: Given: The intial velocity of the shell in the vertical direction is 150 m/s. The initial velocity…

Q: A stealth fighter is in a level flight at a speed of 400 kph and an altitude of 1000 m when it drops…

A: The stealth fighter is flying their plane at an altitude of 1000 m, with a level speed of 400 kph.…

Q: 1110 km, 10- hour flight was travelled at 2 speeds. For the first part of the trip. The average…

A: Distance = speed × time

Q: A roller-coaster cart (250 kg) is traveling at 5 m/s on the track that is 20 m above the ground.…

A:

Q: A cyclist moves with a speed 2 m/s, then accelerates at 1.2 m/s2 after a distance 25 Then the final…

A: Correct option is (b) 8m/s

Q: A kid in a wagon rolls from rest down a hill and reaches the bottom at 12 m/s. On the next run she…

A: From kinematics equation, the formula for the velocity is: Since the wagon roll is not experiencing…

Q: A drunk driver slides off a mountain road and over a cliff 500 m high. How long before the car…

A: Assume the car begins from rest as slides off a mountain road. The time before the car reaches the…

Q: If you could jump with an initial speed at 5 m/a, how many jumps would you need to reach the top of…

A:

Q: An airplane starts from 24.5 m/s and accelerates at 18.3 m/s2. What is its speed at the end of a 518…

A: The given data are: u=24.5 m/sa=18.3 m/s2s=518 m Here, u is the initial speed, a is the…

Q: You shoot a cannonball off the side of a cliff. The cannonball leaves the cannon at 30 m/s , and it…

A: Given Velocity of the cannonball is u = 30 m/s and the horizontal distance covered by the cannonball…

Q: A ball is dropped from the top of a 65-meter tall building. How fast will the velocity be when it…

A: Given data:  Ball is dropped from the top Height of building (h) = 65 m Required: Velocity of the…

Q: Romeo throws 5 gram pebbles at Juliet's window. The pebbles hit the window at 2.7 m/s. How fast (in…

A:

Q: A train is 350 meters long goes through a tunnel that is 2.52 kilometers long how long does the…

A: Given in question: Length of tunnel(L) = 2.52 Km = 2520 m                                 Length of…

Q: A ball is dropped from rest at a height of 15.0m above the ground. Ignore air resistance. What is…

A: In this problem, we know the initial height (hi) of the ball is 15.0m, the final height (hf) is…

Q: 15 m/s Two stones (A and B) are thrown at the same time from a top of building of height 50m. Stone…

A:

Q: A 1200 kg car starts from rest at the top of a hill and at the bottom of the hill is moving at 45…

A: Given data:  Mass (m) = 1200 kg Initial velocity (v0) = 0 m/s Velocity at the bottom of the hill (v)…

Q: An astronaut on earth can throw a ball straight up to a height of 15 m . How high can he throw the…

A: Given An astronaut on earth can throw a ball straight up to a height of 15 m. We have to How high…

Q: car traveling with the initial speed of 30 m/s and traveling a distance 450 m with the final…

A: A car initial speed u = 30 m/s  The final speed of the car is v = 80 m/s  The distance travel by the…

Q: A roller coaster reaches a height of 47 m above the ground in its first hill. If a car starts from…

A: Using law of conservation of energy, the expression for find velocity of car is 12mv2=mgh'-hv=2gh'-h

Q: An object is dropped  from rest at an initial height of 27 m above ground level. What is the…

A: The initial height of the object from the ground is 27 m.The initial speed of the object is 0 m/s.To…

Q: A roadrunner is cruising at 6 m/s without knowing the road under its feet is about to run out, at…

A:

Q: A 500 kg roller coaster car starts from rest at the top of a hill. If its velocity at the bottom of…

A:

Q: John can fly his airplane 2140 miles with a wind speed of 25 mph in the same time he can travel 1940…

A:

Q: An object is thrown upward at a speed of 71 feet per second by a machine from a height of 8 feet off…

A: Height is given as  h=-16t2+71t+8…

Q: A 150kg fish swimming at 8.0m/s swallows a 15kg fish swimming towards it at 4.0m/s.  What is the…

A:

Q: A 641-kg roller coaster car descends a 25-m-high hill with an initial velocity of 7 m/s. It then…

A: Since there is no loss of energy.Total energy at the top of the first hill=Total energy at the top…

Q: At one moment aN object in free fall is moving upward with a velocity of 30m/s  . How fast would the…

A: Newton's equation of motion for final velocity is,

Q: A motorcycle rider speeds off a 20-meter-high cliff. How fast must the driver leave the cliff to…

A: Given data: Height of the cliff y =- 20.0 m Height of the cliff from the ground x =100 m

Q: A ball is dropped from 60 meters above the earth. How high does it take to get your feet on the…

A:

Q: An airplane starts from 19.4 m/s and accelerates at 18.7 m/s2. What is its speed at the end of a…

A: Given data:  Initial velocity (v0 ) = 19.4 m/s Acceleration (a) = 18.7 m/s2 Displacement (x) = 482 m…

Q: You shoot a ball straight up with an initial speed of 8490 m/s. When it reaches a height of 4.0 x 10…

A: Given, v0=8490 m/sh=4.0×106 m