Question

In: Physics

A projectile is fixed at an upward angle of 38.0 degrees from the top of a...

A projectile is fixed at an upward angle of 38.0 degrees from the top of a 105m high cliff speed of 165m/s. What is it’s speed when it strikes the ground? Please show all work.

Expert Solution

Given launching speed ,u =165 m/s

Angle of projectile launch ,

The launching speed can be split into its components u_x and u_y ,Where

Since there is no acceleration in horizontal direction value of u_x don't change

so

----------------------

Consider vertical motion of horizontal

Rising Part

At max height, Velocity in vertical direction becomes zero

Use Formula v² -u² =2as

gravity is acting downwards

-----------------

Now Falling Part

Total Distance to cover = s +height of cliff = 525.96 +105 =630.96 m

Initial vertical velocity is Zero

Use Formula v² -u² =2as

----------------

ANSWER:

==========================

genius_generous answered 7 months ago

A projectile is fired at an upward angle of 380 degrees from the top of a...

A projectile is fired at an upward angle of 380 degrees from the top of a 105-m-high cliff with a speed of 165m/s. What is its speed when it strikes the ground below ?

A projectile is launched at an angle of 60 degrees to the horizontal from 6.5ft above...

A projectile is launched at an angle of 60 degrees to the horizontal from 6.5ft above the ground at an initial speed of 100 ft/sec. Assume the x-axis is horizontal, the positive y axis is vertical (opposite g), the ground is horizontal, and the only gravitational force acta on the object. Answer parts A through D. A) Find the velocity - v(t) and position - r(t) vectors for t greater than or equal to 0. B) Graph the trajectory C)...

A stone is thrown from the top of a building at an angle of -20.0 degrees...

A stone is thrown from the top of a building at an angle of -20.0 degrees relative to the horizontal with an initial velocity of 30.0 m/s. The building is 65.0 m tall. 1. Determine how long the stone is in the air 2. Determine the speed of the stone right before it hits the ground. 3. determine the angle of velocity with respect to the x-axis at impact. 4. Determine where the stone strikes the ground.

A projectile is fired at an angle of 28 degrees above the horizontal with an initial...

A projectile is fired at an angle of 28 degrees above the horizontal with an initial velocity of 1800 feet per second from an altitude of 1,000 feet above the level ground. A) Formulate the vector valued function (in simplified form) for the position of the projectile at any time,t. B) When and where (in terms of down range distance) does the projectile strike the ground? Be clear and label your results, including units. C) When does the projectile reach...

A projectile is launched with a speed of 45 m/s at an angle of 35 degrees...

A projectile is launched with a speed of 45 m/s at an angle of 35 degrees above the horizontal from the top of a wall. The projectile lands 250m from the base of the wall. a.) Determine the height of the wall. b.) Determine the impact velocity of the projectile

a projectile is launched in the horizontal direction at an angle of 0 degrees. vertical height...

a projectile is launched in the horizontal direction at an angle of 0 degrees. vertical height of 0.992meters and a horizontal displacement of 3.1311+-0.051205m what is the time of the fall? do not forget u certainties

A projectile is launched from ground level at angle θ and speed v_0 into a headwind...

A projectile is launched from ground level at angle θ and speed v_0 into a headwind that causes a constant horizontal acceleration of magnitude a opposite the direction of motion. Find an expression in terms of a and g for the launch angle that gives maximum range. The answer is θ = 45 - (1/2)tan^-1(a/g) The problem that I'm having is I have no idea how to get to that answer. Please do the problem and tell me where you...

Projectile Motion - From Ground - General Launch Angle A rocket is fired at an initial...

Projectile Motion - From Ground - General Launch Angle A rocket is fired at an initial speed v0 = 160.0 m/s from ground level, at an angle θ = 46° above the horizontal. Ignore air resistance. The magnitude of the gravitational acceleration is 9.8 m/s2. Choose the RIGHT as positive x-direction. Choose UPWARD as psotitive y-direction Keep 2 decimal places in all answers A. Find v0x, the x component of the initial velocity (in m/s) B.Find v0y, the y component...

A projectile is fired from ground level at an angle of 63 degree above the horizontal...

A projectile is fired from ground level at an angle of 63 degree above the horizontal with an initial speed of 30 m/s . What is the magnitude of its instantaneous velocity the moment before it hits the ground? Express your answer in meters per second to two significant figures.

In a fireworks display, a firecracker is launched at an angle from the top of a...

In a fireworks display, a firecracker is launched at an angle from the top of a high tower of height h0 = 50.0 m. As a result of the firecracker’s design, its position coordinates are of the form x(t) = A + Bt 2 and y(t) = C + Dt 3 , where A, B, C, and D are constants. The acceleration of the firecracker 1.00 second after firing is = (4.00î + 3.00ĵ) m/s 2 . Taking the origin...