A missile is launched with a velocity less than escape velocity. The sum of its kinetic energy and potential energy is ___________ a) Zero b) Positive c) Negative d) First positive and then negative
Q: The rate at which work is done is known as .
A:
Q: How much work is done by the force of gravity in moving a 10 kg block from an initial height of 2 m…
A: Given: Mass of block, m = 10 kg initial height, h1 = 2 m final height, h2 = 10 m Value Used:…
Q: "30 kg bear slides, from rest, 8 m down a Lodgepole Pine tree, moving with a speed of 5.6 m/s just…
A: Dear student The Gravitational Potential energy of a particle is given by : U = mgh Where, m = mass…
Q: A roller coaster starts from rest. Ignoring the effects of friction, where would the coaster's…
A: Potential energy of a body of mass m situated at height h from the ground is given by, U=mgh.…
Q: What happens to the Potential and Kinetic energies of a body as it falls down from a height? A) Its…
A: Potential energy is the energy stored in an object when it is kept at a height, whereas kinetic…
Q: An object having a mass of 0.79 kg falls from a height of 5272 m to 447.7 m. Calculate the work done…
A: Given : mass of the object, m = 0.79 kg Initial height , h1 = 5272 m Final height, h2…
Q: "25 kg bear slides, from rest, 8 m down a Lodgepole Pine tree, moving with a speed of 5.6 m/s just…
A: potential energy=mgh
Q: If a force acts perpendicular to the direction of motion of a body, what is the amount of work done?…
A: C is correct
Q: A car in a roller coaster, whose mass is equal to 200 Kg, starts from rest at a height of 50.0 m…
A: Part (a) Given: The mass of car is m=200 kg. The height of car at point A is hA=50.0 m. The initial…
Q: The graph represents the applied force as a function of position on a moving object. How much work…
A:
Q: done
A:
Q: A box of apples of mass 22kg slides 2.5m down a ramp inclined at 44 degrees to the horizontal. The…
A: Given Mass, m = 22 kg Slides , L = 2.5 m Inclined plane of 43 degree Friction force ,Fr = 79 N…
Q: Fill in the blanks using the words “smaller than”, “greater than” or “the same as”: A. Both rocks…
A: The conservation of energy states, if there is no energy exchange between the environment and…
Q: A dog and a mouse run down the road with the same Kinetic energy. The faster moving one is the
A:
Q: How much work is required to stop an electron which is moving with a speed of 1.3 × 106 m/s? (mass…
A: Work is equal to the dot product of the force and displacement. It is defined as the amount of…
Q: Compare the work you do running versus walking up a set of stairs to reach the third floor. Assume…
A: To compare Work you do running versus walking up a set of stairs to reach the third floor
Q: A cheetah can accelerate from rest to 6.4 m/s (about 16 m/h) in 1.2 seconds. How much average power…
A:
Q: QUESTION 2 A mass of 8 kg is traveling was traveling at a constant 11.8 m/s when a 42 N force, F,…
A: Ans:- Image-1
Q: A car slams on its brakes and slows down. The work done by the brakes on the car must be a)…
A: Let the mass of car = m Let the initial velocity = u Let the final velocity = v It is given that…
Q: 4) A block of 1 kg falls from a vertical cliff of height 100m. a) Calculate the velocity of the…
A: Hai, since there are multiple sub parts posted, we will answer the first three sub parts. (a) The…
Q: K02
A: Given that:-Mass of the ball, m=12 kgHeight, h=27 mto calculate, PE after 1 secWe know…
Q: A 1400 kg car accelerates from 5 m/s to 10 m/s. The net work done by the car is VI V2 500 kJ 200 kJ…
A: Given: The mass (m) of the car is 1400 Kg. The initial velocity (u) of the car is 5 m/s. The final…
Q: 20 - Bolum-7+A2B1C3uUxiD5ViBM7s27Vi20FXF231G A2.00 kg particle has a speed of 4.00 m/s at point A…
A:
Q: A 4 kg ball falls from height of 29. What willbe potential energy of the ball after 1 second? Use g…
A:
Q: A force of 5 N acts on an initially stationary object of mass 15 kg. Calculate the work (J) done by…
A:
Q: 5) You carry a 5.0 kg bag of groceries 0.8 m above the ground at constant speed across a 2.3m room.…
A:
Q: m A person is pushing a wooden crate of mass mo = 20 kg at a constant speed vo = 1.2– for Ax = 3 m…
A: Given: Mass of the wooden crate, mo = 20 kg Speed of the crate, vo = 1.2 m/s Distance moved, ∆x = 3…
Q: A force can do no work on a body, yet the body can move under accelerated motion. a) True b) False
A: True
Q: A missile is launch with a velocity less than it escape velocity. The sum of it kinetic and…
A: A missile is fired at a speed lower than its escape speed. The total of its kinetic and potential…
Q: 4) A block of 1 kg falls from a vertical cliff of height 100m. a) Calculate the velocity of the…
A: Given : Mass = 1kg Height = 100 m (a) Velocity before it hits ground : We know 3rd equation of…
Q: An acce starting
A: According to work energy theorem Work done = change in kinetic energy
Q: You give a 5.0 kg box a quick shove up a ramp. It reaches a vertical height of 3.0 m before…
A: m = 5 kg h = 3 m vf = 0 m/s (Eth)f = 100 J g = 10 m/s2
Q: Two particles, each of mass 7.0 kg, are a distance 3.0 m apart. To bring a third particle, with mass…
A:
Q: How much work was done if an objects kinetic energy changes from 35 J to 15 J? A) -20 J B) 20 J C)…
A: Given, Initial KE =35J Final KE=15 J
Q: What can be said about the speed of a particle if the net work done on it is zero? explain briefly
A: Given Net work done on particle is zero Wnet = 0 According to work energy theorem ,…
Q: In the figure shown, if the mass (m-6 Kg) is moving with constant speed and traveled a distance…
A:
Q: Based on the data below, choose the correct statement that could apply Car A mass= 1500 kg speed=…
A:
Q: Worker A lifts a 50kg mass vertically upward a distance of 10 meters in a time of 10 seconds. Worker…
A: Given data: Mass lift by worker A (mA) = 50 kg Height (hA) = 10 m Time (tA) = 10 s Mass lift by…
Q: A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of…
A: Given that-Mass of the mouse is 200 gInitial speed is 0 m/sFinal speed of ball is 8.0 m/sThe height…
Q: You shoot a bullet aiming to a far away tree. The bullet is 15.0 g and it embedded 15.0 cm into the…
A: a) The work done is change in kinetic energy. therefore, W=12mv2-12mu2 W=1215.0×10-3 kg0…
A missile is launched with a velocity less than escape velocity. The sum of its kinetic energy and potential energy is ___________
a) Zero
b) Positive
c) Negative
d) First positive and then negative
Step by step
Solved in 2 steps