10.7. Suppose an object is dropped from a height h (h « Rp, where Rg is the radius of Earth). Show that the speed with which it will hit the ground is 2 RE

Q: ment Bo ar over speed? se same

A: Given that                  The distance covered by the car is (s) = 6m                  The time…

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: A student who is 5'5" and weighs 52kg ran up a 4.08m high staircase in 6.3s. Determine the…

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Q: A ball is thrown upward at a velocity of 25 m/s. What is its height after 3.0 s, assuming negligible…

A: Given: The initial velocity of the object is 25 m/s. The time interval is 3 s.

Q: If a rock of mass 6kg is dropped from a height, and has a velocity of 5 m/swhen it hits the ground,…

A: Given: mass m = 6kg final velocity v = 5 m/s To find: height, s=??

Q: If you drop a rock on Mars from a height of 1.20 m, at what speed does it hit the ground?…

A: First I calculated gravitational acceleration g on Mars then use equation of motion.

Q: To bring a very big ship to a stop,  its engines are typically cut off about 25 kms from port. Why?

A: A very big ship has an enormous large amount of   mass , due to  this   its momentum will be very…

Q: 5 ft 3 ft 2 ft- 4 ft - A |B 5 3 1213 4 5 500 lb 200 lb 260 lb

A: The resultant force in the y direction is

Q: In an attempt to conserve energy (and, let’s be honest, save some cash), Bob decides to ride his…

A: Let the speed of Bob on the ground ismph. Fill the table using the given information as follows:…

Q: another term for position is ___.

A: Position of an object is the place where it is situated. In physics, position is denoted by a number…

Q: A plane leaves at 10:29 P.M and arrives at Las Vegas late the next afternoon at 5:41pm. Exactly how…

A: Given, A plane leaves at 10:29 P.M and arrives at Las Vegas late the next afternoon at 5:41pm.

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: Is a statement abo B (15.0 m) D (10.0 m) 30.0 53.0 25.0 Č 12.0 m) A (8.00 m)

A: Consider the figure of vector as drawn below:- On resolving components along horizontal &…

Q: A ball with a mass of 0.75 kg is dropped from a height of 20 m. If the ball has a speed of 18 m/s…

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Q: the mass (m) of the object is

A: Normal force is balanced by normal reaction to keep object in equilibrium.

Q: The acceleration due to gravity is 9.8 m/s squared. This means that a freely-rising object is

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Q: 5 m 4m |0. 6m 1m 100kg 6 m

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Q: If the mass of the egg is 0.50 kg , its initial speed is 2.3 m/s, and the time to stop is 0.20 s,…

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Q: If Michael Jordan has a vertical leap of 1.29 m, then what is his take off speed?

A: Given data: Vertical height (h) = 1.29 m Required: Take off speed (vi)

Q: Re=6400km g=9.8ms-2 Whats escape velocity ?

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Q: If the period of a circular motion is 0.2 minutes, what is its frequency, in hertz?

A: given :  T = 0.2 minutes

Q: A comet is traveling in outer space with a velocity of 2000 m/s. How long will it take to travel…

A: Given :  velocity of comet , v = 2000 m/s Distance to travel  , d =300,000 m

Q: Suppose an object is dropped from a height h (h < RĘ, where Rp is the radius of Earth). Show that…

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Q: a stone is dropped froma a height of 3.0m. its speed after 1.0 seconds is

A: If a stone is dropped from a height, then the gravitational acceleration g = 9.81 m/s2. Its initial…

Q: A ball is dropped from the roof of a building 40 meters tall will hit the ground with a velocity of:

A: Given data The height of the building is given as s = 40 m. The initial velocity of the ball is…

Q: A tennis ball is thrown straight up with an initial velocity of 20 m/s. Assuming no air resistance…

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Q: An object is projected from the surface of the earth with a speed of 2.72×104 m/s. What is its speed…

A: initial speed = 27200 m/s Original position = surface of the earth using conservation of energy…

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: A 0.15 kg ball is dropped. How fast will it be moving after it has fallen 1.5 meters?

A: Given Data : The mass of the ball is given as m = 0.15kg. The distance travelled by the ball during…

Q: In an experiment, a tern (a seabird) was taken from its nest, flown a distance 5050 km away, and…

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Q: Tisn. ast the speeds of the formerly hungry

A: Let the mass of small fish =1kg Mass of hungry fish = 5kg (A) 5kg×4m/s + 1kg×0 = (5kg +1kg)v 20kgm/s…

Q: A snowshoe hare can jump 3.6 m high straight up into the air. Whe

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Q: 2.0 m 10m 4.0 kg 1.0 kg

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Q: A ladybug weighing 28.5 mg flies by your head at 4.09 km/h.

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Q: How long must a tow truck apply a force of 600 N to increase the speed of a 1,500 kg car at rest to…

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Q: 0.200 m/s 0.400 m/s 30.0 g 10.0 g

A: In an elastic collision, the momentum of the system is conserved.  The momentum is given by  p = m v…

Q: A weight on the end of a spring bobs up and down one complete cycle every 5 seconds. It's time…

A: The weight attached to the end of the spring, the motion of the system is known as the simple…

Q: Superhighway in Canada have speed limits of 100 km/h. How does this compare with the 65 min/h speed…

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Q: O The sum of the masses

A: Since, we know that:- Force(F)=mass(m) × Acceleartion(a) Hence, Fa=m   Hence, from above expression…

Q: A man can jump on moon six times as high as on earth. Why?

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Q: ssolves in a cup of tea

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Q: A man has a pace factor of 0.65/pace. If a distance on the ground was measured to be 45.50m, it…

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Q: What momentum does a car of mass 1,490 kg have if it's traveling at 8.6 m/s? Submit your answer in…

A: The mass of the car is m = 1490 kg. The velocity of the car is v = 8.6 m/s.

Q: How much force was required to slow the car down to 2 m/s^2 if the mass of the car is 8000kg?

A: Given data: Magnitude of acceleration (a) = 2 m/s2 Mass (m) = 8000 kg Required: Force (F)

Q: If a baseball is dropped from a skyscraper, what will its speed (velocity) be after 4.5 seconds…

A: let baseball is dropped with zero initial velocity u=0 since there is no air resistance a=g=9.8 m/s2…

Q: Cats are very agile and high-jumping animals due to their limb length and muscle mass on the back…

A: The average height jumped by a cat is given by h=2.5 m