force of 40 N acts on body of mass 5 Kg which is initially at rest. What is the amount of work done in the first 10 s? a) 16000 J b) -16000 J c) 400 J d) -400 J
Q: The brakes of a truck cause it to slow down by applying a retarding force of 7560 N to the truck…
A: The objective of this question is to calculate the work done by the force applied by the brakes of…
Q: 1. A car starts at rest, and ends up with 1500 J of KE. How much Work was done on it?
A: As per our guidelines, we are supposed to answer only first one question in case of multiple…
Q: A youngster rides on a skateboard with a speed of 2m/s. After a force acts on the youngster, her…
A:
Q: Which of the following statements is false? a. The work done by a conservative force is always zero…
A: Here from all four option → option (b) is false. Explanation: 1.Work is a displacement of any…
Q: A cheetah can accelerate from rest to 6.4 m/s (about 11 m/h) in 1.0 seconds. How much average power…
A:
Q: A person pushes a wheelbarrow with a horizontal force of 50 N on levele ground over a distance of…
A: Drawing Free body diagram of the wheelbarrow We know that workdone W=F×D×cos(θ)…
Q: In the figure shown, if the mass (m=6 Kg) is moving with constant speed and traveled a distance…
A: In the given question, we have to find the work done by the frictional force in moving a distance of…
Q: A 95 kg man runs up a 20 m high stairs at a constant speed. If it takes him 8 seconds to reach the…
A: The rate of doing work is called power.
Q: Which statement about work is NOT true? OA. Work cannot be negative. B. Work is a scalar. OC. The…
A:
Q: 8. A block is moving with 52.0 J of KE. A 12.0N force pulls the block straight forward for 3.00 m.…
A:
Q: QUESTION 4 The work done by any force can be calculated by using the formula W = F s cos(e) where…
A: The work by any force can be calculated by using the formula is W=Fscosθ Here F is the applied…
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: A 2.00-kg (20.0-N) stone is dropped from a height of 5.0 m, and strikes the ground with a velocity…
A: Given data: Mass (m) = 2.00 kg Weight (mg) = 20.0 N Height (h) = 5.0 m Initial velocity (v0) = 0 m/s…
Q: If I lower a weight to the ground, the total work I provide is: A. positive B. negative C. zero
A: If i lower a book on the ground then work provide by me is negetive. Because the force given by me…
Q: I Review I Constants An 8.5 kg crate is pulled 5.4 m up a 30° incline by a rope angled 19° above the…
A:
Q: 1. Draw a situation where a force is doing zero work. Explain why the force is doing no work,…
A: To explain a situation where work done by a force is zero.
Q: Give an example when the work done by a force is 1. Positive 2. Negative 3. Zero What is the effect…
A: Expression for the work done by a force is W=Fdcosθ The work done is positive when the displacement…
Q: Calculate the work done from x=0.0 to x = 7.0 m by the one-dimensional force depicted in the…
A: Note:- The area under the force-displacement graph gives the work done.Given- the graph of one…
Q: A car (m=1000 kg) is initially moving at a speed of 20 m/s (~45 mph) when the driver hits the brakes…
A: Work done is equal to change in kinetic energy W=∆EK=12mvf2-vi2=121000 kg0-20 ms2=-200000 J=-200 kJ
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: A block is moving with 52.0 J of KE. A 12.0 N force pulls the block straight back, against the…
A: Given data: Initial Kinetic Energy (KEi) = 52.0 J Force (F) = 12.0 N, straight backward Displacement…
Q: A block is at rest. A 40.0 N force directed 38.0° above horizontal pulls the block 8.00 m across…
A: Given data: Initial velocity (v0) = 0 m/s Force (F) = 40.0 N Angle (θ) = 38.0° Displacement (d) =…
Q: Children in a tree house lift a small dog in a basket 4.70m up to their house. If it takes 201J of…
A:
Q: Calculate the work done when a 5.0 kg bag of apples is lifted 1.2 m off the ground. 13 c)…
A:
Q: Describe a situation where an object is in motion but no physical work is being accomplished.…
A: Consider the situation where a person carrying a suitcase on his head and walking. Now for an…
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: 1.90 kg book is sliding along a rough horizontal surface. At point A it is moving at 3.24 m/s, and…
A:
Q: A cheetah can accelerate from rest to 7.4 m/s (about 17 m/h) in 1.1 seconds. How much average power…
A: The correct choice of answer is option (a) i.e. 1300 W
force of 40 N acts on body of mass 5 Kg which is initially at rest. What is the amount of work done in the first 10 s?
a) 16000 J
b) -16000 J
c) 400 J
d) -400 J
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- 3. A student drags a 3 kg box 5 m across a rough floor with a force of 40 N. A frictional force of 10 N resists the motion of the box. A) Calculate the work done by the student. B) Calculate the work done by friction. C) Determine the net work done on the box. D) If the box started from rest, how fast is it going at it approaches 5 m? has a yelocity of 8Question 9 What does it mean when an object has positive work done on it by a force? Energy is flowing out of the object. Energy is flowing into the object. O The object's energy is not changing. Question 10 What does it mean when an object has negative work done on it by a force? The object's energy is not changing. Energy is flowing out of the object. Energy is flowing into of the object.How much work (in J) must be done to lift a stack of bricks, which has a mass of 50 kg, from the ground to a height of 6 m? (g = 10 m/s?) A. 300J B. 500 J C. 3,000) D. 5,000J E. zero J
- An object is displaced by 0.5m against a force of friction at 2N. What is the work done on the object by the friction? -6J 1J -1J 4JA cheetah can accelerate from rest to 7.4 m/s (about 18 m/h) in 1.8 seconds. How much average power does the cheetah generate during the acceleration phase of its motion if its mass is 51 kg?a) 1400 W. b) 1600 W. c) 1800 W. d) 2500 W. e) 2800 W.The brakes of a truck cause it to slow down by applying a retarding force of 7680 N to the truck over a distance of 760 m. What is the work done by this force on the truck? Number Units
- 5A rope applies a horizontal force of 500 N to pull a crate a distance of 2 m across the floor. A frictional force of 50 N opposes this motion. What is the net work done on the crate? a) 1000 j b) 100 j c) 900 j d) 1100 jA cheetah can accelerate from rest to 7.4 m/s (about 17 m/h) in 1.1 seconds. How much average power does the cheetah generate during the acceleration phase of its motion if its mass is 51 kg? a) 1300 W. b) 1500 W. c) 1900 W. d) 2200 W. e) 2600 W.
- Explain how you know there is work being done on an object?3You lift your backpack from the ground and moved forward to your car. Which of the following statements is true? A. Work is done on the backpack while lifting it and moving it forward. B. Work is done on the backpack while lifting it and but not when moving it forward. C. No work is done on the backpack while lifting it but work is done on it when moving it forward. D. No work is done on the backpack at all.