A pen fell from a table from the height of 120 cm. (A) Find out how long it will take to reach on the ground. (B) What would be its speed when it hits the ground?

Q: If an object falls from the top of the building, what will its speed be after 2.60 seconds?

A: Given data: Initial velocity (V0) = 0 m/s Time (t) = 2.60 s Required: The final velocity(v)

Q: A ball drops from a building and strikes the ground in 4.4 s. The speed (in m/s) with which the ball…

A: Initial speed of ball is zero and the ball‘s motion is under gravitational acceleration only.

Q: Why is overall stopping distance for cars less than lorries

A: Stopping distance depends on , frictional force acting on the tire by the ground. Normally it does…

Q: If a 1000kg cart races down the tracks, what will its velocity be at the bottom of the first hill…

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Q: When a ball is thrown straight up, by how much does its speed change each second? Neglect air…

A: In the upward motion, the acceleration due to gravity is given as, a = -g According to Newton’s…

Q: A car moving at 20 m/s crashes into a tree and stops in 0.26s. Calculate the force the seat belt…

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Q: A flower pot falls off a window. The window is 2.0 m from the ground. What is the speed of the…

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Q: If the speed at x = 1, v(r = 1) = 3 m/s then the speed at x = 0, v(x=0) is:

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Q: A ball is thrown vertically up with a velocity of 27.9m/s at the edge of a 45-m cliff. Calculate the…

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Q: How fast will it be going when it hits the ground

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Q: The vertical height attained by a basketball player who achieves a hang time of a full 1s is about?

A: The hang time is 1 s . if there is no resistance the time to reach maximum height and time required…

Q: How much force does a 15-kg leg exert during running if the person has a 2-m stride and runs at a…

A: Mass of the leg (m) = 15 kg Speed (v) = 8 m/s Energy = 1/2 m v2  .       E = (1/2 )× 15 × (8)2…

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: A bottle falls from a place with a height of 1200m,  assuming g=10m/s^2 if there was no air…

A: Given data:  Initial velocity (Vi) = 0 m/s, dropped Height (h) = 1200 m Acceleration (g) = 10 m/s2,…

Q: A rock is dropped from rest. How long will it take to fall a distance h? Ignore air resistance. 2h…

A: Given data: Initial velocity (v0) = 0 m/s Height = h Air resistance is negligible  Required:  The…

Q: ! A block falls from rest off a building that isy= 186 m tall.

A: Given to us is,            Height from which the block falls(S) = 186 m…

Q: A person pushes a stopped car of mass 400 kg with a force of 200 N until the car its velocity is 5…

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Q: A baseball is hit into the air with a bat. When does the ball have the greatest KE? O When it leaves…

A: By conservation of mechanical energy, The sum of kinetic energy and potential energy is constant…

Q: Suppose you bungee jump with a 100 meter long rope. How fast are you going after you have fallen 50…

A: If I bungee jump then I fall with acceleration a = g = 9.8 m/s2

Q: Show that a freely falling rock drops a distance of 45 m when it falls from rest for 3 s.

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Q: would

A: The kinematics equation can be used to find the unknown parameters such as final velocity, distance…

Q: A truck with velocity 33 m/s turned a corner too sharp and lost part of the load. A falling box will…

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Q: A brick is dropped for rest on a high scaffold, whats its velocity after 2.1s and how far has it…

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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 diver jumps from a height of 36 m What is his flight speed when he reaches the water?

A: Write the given values with the suitable variables. u=0 m/sh=36 m Here, u is the initial speed and h…

Q: A 39.5 kg mg child on a sled slides down a hill reaching a speed of 8.92 meters per second how high…

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Q: in order to find the depth of a well, you drop a stone into it and time its fall. it hits the water…

A: Depth of the well is,

Q: A pebble is dropped from rest from the top of d falls 4.9 m after 1.0 s has elapsed. How much fa…

A: Given:-  A pebble is dropped from the rest from the top of the cliff   it falls in  t= 1 sec to d =…

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 body weighing 64 lb is dropped from a height of 100 ft with an initial velocity of 10 ft/s. It is…

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Q: A car with a mass of 1.2 tons generates a force of 2000 Newtons. The time required for the car to…

A: M= 1200kg, F= 2000N , V= 27m/s

Q: A woman skis from rest a downhill of 65 m high. If the friction is neglected, calculate her speed in…

A: Energy conservation: As we know energy can neither be created nor destroyed it can only be converted…

Q: Given that a Christmas tree ball will break if dropped on a hardwood floor with a speed of 2 m/s or…

A: Given : Height of the tree ( h) =0.15 m   By the 3rd equation of motion : v2=u2+2gh where v=final…

Q: A ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the…

A: Given: The intial and final position of the object is the same. The resistive force is unavailable.

Q: You throw a rock straight up from the edge of a cliff. It leavesyour hand at time t = 0 moving at…

A: Let gravitational acceleration g = 9.81 m/s2. And let the throwing point as the ground 0 for the…

Q: ayab on his heavy bike drives for 2 h at 100 km/h and for 3 h at 30 m/s. His average

A: Suppose Tayab on his bike travel distance (D1) & (D2) in kilometer in two different intervals of…

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

A: Given data: Height of the stone, h=60 m

Q: Does the length of a skateboard affect the jumping distance over a ramp?

A: if the jumping distance is measured from the edge of the ramp to the back of the board then the…

Q: From a cliff above a road, a boulder falls down during a storm. The cliff is 65ft. high. How long…

A: The second equation of motion is  s = u t + 0.5 at2 where, s is the distance, u is the initial…

Q: A book is dropped from a height of 36 m. Find its speed when it is halfway down

A: Given data: Initial velocity (V0) = 0 m/s Initial Height from ground = 36 m Required: Speed of book…

Q: A car moving at 25 m/s crashes into a tree and stops in 0.3 s. Calculate the force the seat belt…

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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: A man jump from the height of 30 m to ground. What is the final velocity of the just befor it reach…

A: Given data The height from where the man jumps is given as h = 30 m. The initial velocity is given…