A 2.50-kg fireworks shell is fired straight up from a mortar and reaches a height of 110 m. (a) Neglecting air resistance (a poor assumption, but we will make it for this example), calculate the shell’s velocity when it leaves the mortar. (b) The mortar itself is a tube 0.450 m long.  Calculate the average acceleration of the shell in the tube as it goes from zero to the velocity found in (a). (c) What is the average force on the shell in the mortar? Express your answer in newtons and as a ratio to the weight of the shell.

Q: A lift comes down from rest with an acceleration of 7 ft/s2 into it attained a velocity of 21 ft/s.…

A: Lift came down with  Initial velocity = v = 0 ft/s  Final velocity = V = 21 ft/s  Acceleration = A =…

Q: The muzzle velocity of the bug guns on a battleship is 850 m/s when firing a certain mass shell.  If…

A: Assume a shell is fired from a bug gun at an angle θ = 40 ̊ with the horizontal. The initial…

Q: As you go above the Earth's surface, the acceleration due to gravity will decrease. Find the height,…

A: The acceleration due to gravity, g, on Earth's surface is given by: g=GMR2 Where G is the…

Q: 6. A rocket is to be fired vertically upward. The initial mass is Mo, the exhaust velocity -u is…

A: Rocket is an example of the system of variable mass. The mass of the rocket including fuel is…

Q: A 1.5-mm-long, 0.55 mg flea can reach a height of 17 cm in a single leap. Ignoring air drag, what is…

A: Given: The length of the flea l = 1.5 mm. The mass of the flea m = 0.55 mg. The height covered by…

Q: it experiences a br

A: Given: Football punts the ball at 45o Distance of ball is 60 m

Q: A drone falls from the height of 250 m and suffers a shock when it hits the ground. If the duration…

A: Given: x=250m t=15s g=9.81m/s2

Q: The driver of a 1000 kg car travelling at 30 m/s slams on its brakes. If the force of friction is…

A: Given that, The mass of a car, m = 1000 kg The initial speed of a car, u = 30 m/s Then the car…

Q: ) You drop your cell phone from your hand which is 1.0m above the ground. What will its speed be…

A: Given data The height from which the cell phone drops is given as s = 1 m.   The final velocity of…

Q: A Princeton prof. (mass = 70.0 kg), surprised by the large stopping force he calculates for jumping…

A: Given information: Here, h is the height and s is the distance required to completely stop.

Q: a man jumps of a bridge which is 30 m above a river. attached to him and the bridge is a 22m long…

A:

Q: ASSIGNENT-01 A train accelerates uniformly from est at station A to a maximum speed of 72km/h. The…

A: The three equation of motion:  v = u + at.  s = ut + 1/2(at2) v2 = u2 – 2as.

Q: A stone is thrown upward with an initial speed of 16 m/s. (a) What will it's maximum height be? (b)…

A: Given data: Initial speed of the stone, u=16 m/s

Q: 3. A golfer gives a ball a maxim 1. What is the longest p ball might roll on the same level. 2. What…

A:

Q: An oil droplet, mass 0.2 g, falls from rest in air. For a velocity of 40 cm/sec, the force due  to…

A:

Q: A 0.80 kg mass is hung from a string of 0.70 meters. The mass hangs at rest. Now the mass is…

A: Given data: The mass is m=0.8 kg. Length of string is L=0.7 m.

Q: A ray of light with 1, = 525.0 nm is incident upon a glass sphere with index of refraction of n, =…

A: Given:  θi=60°R=25 cmn2=1.271 for λ2=501.4 nm

Q: A 12-kg cannonball is fired with a velocity of 12 m/s from 26 m above the ground. It hits a target…

A: mass = 12 kg initial velocity = 12 m/s initial height = 26 m final height = 13 m

Q: Q1: A gun fires a porjectile of mass 10 kg . The muzzle velosity is 163 m/s . if the barrle be…

A: mass of projectile (m) = 10 kg Muzzle velocity (v) = 163 msAngle (θ) = 17o

Q: If the location of the landing of a water bottle rocket could be controlled, what is the physics and…

A:

Q: Prove that the time of ascent is equal to the time of descent

A: Schematic diagram: Here, t1 is the time of ascent and t2 is the time of descent.

Q: What is the minimum speed that the golf balls need to be hit to have a chance at creating escape…

A: let's consider an object of mass  at the surface of a celestial body (e.g., Earth) with mass .The…

Q: A force F = (90, 80) N acts on a mass of 5 kg. At time t = 0 s, the mass is initially at rest. What…

A: The x component of velocity is, vx=axt=Fxmt=90 N1.9 s5 kg=34.2 m/s

Q: Part A Suppose the current in a wire follows the equation I(t)=7 + 2t with Iin amperes and t in…

A: Formula of charge in terms of current is as follows: q=∫t1t2I(t)dt…

Q: Show that the time required for a projectile to reach its highest point is equal to the time for it…

A: relation between time of ascent of projectile and time of descent of projectile:

Q: It’s commonly understood that “It’s not the fall that kills you, it’s the sudden stop at the end.” A…

A:

Q: he electric field in a region of space has the components E, = E, = 0 and Ex = (2.50 N/(C-m))x.…

A: Electric field is the negative gradient of electric potential.  E = - dV /dr  So in direction of…

Q: What will be the final speed of a car that starts with a speed of 4km / h and at hours has an…

A:

Q: As you go above the Earth's surface, the acceleration due to gravity will decrease. Find the height,…

A:

Q: In what percentage will the maximum range of a typical projectile be increased if the initial…

A:

Q: FOR PROJECTILE OF MOTION, Assume that you measure the time of flight as 1.3 seconds. If the…

A:

Q: football is thrown by a quarterback (from shoulder level) to a receiver downfield, who catches it at…

A: We know that the speed of the object which is in a projectile motion varies with time. It has an…

Q: A man steps outside one winter day to go to work. His icy driveway is 8.0 m long from top to…

A:

Q: A pen fell from a table from the height of 120 cm. (A) Find out how long it will take to reach on…

A:

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: