A force of 10 newton acts on a body
Asked by admin @ in English viewed by 297 People
A force of 10 N acts for 20 second on a body of mass 2 kg initially at rest. Calculate
the energy required by the body and the workdone by the applied force.
Answered by admin @
Answer:
10kJ
Explanation:
F = ma
F = m x (v-u)/t
Ft = mv - mu
10x20 = 2(v) - m(0)
200/2 = v
100m/s = v
ΔKE = Work Done
1/2mv² - 1/2mu² = W
1/2(2)(100)² - 1/2(2)(0)² = W
10000 - 0 = W
10000J = W
10kJ = W
Similar Questions
A constant force acting on a body of mass 3kg
Asked by admin @ in Physics viewed by 317 persons
A constant force acting on a body of mass 3 kg changes its speed from 2m to 3.5m in 25seconds what is the magnitude and direction of force
A force acting on a body of mass 2kg
Asked by admin @ in Physics viewed by 295 persons
a force acting on a body of mass 2 kg varies with time as shown in figure. find impulse of force and final velocity of force .
Force acting on a body can be measured by
Asked by admin @ in Physics viewed by 330 persons
Force acting on a body can be measured by a_
If a force of 250n acts on a body
Asked by admin @ in Physics viewed by 306 persons
if a force of 250 N act on body , the momentum acquired is 125 kg m/s what is the period for which force acts on a body?
What happens when two forces act in the same direction
Asked by admin @ in Physics viewed by 305 persons
What happen when two forces act is same direction
The sum of all the forces acting on an object
Asked by admin @ in English viewed by 287 persons
What is the sum of all forces acting on the object called?
A constant force acts on an object of mass 5kg
Asked by admin @ in Physics viewed by 319 persons
a constant force acts on an object of mass 5 kg for the duration of 2 sec. it increases the velocity from 3m/s to 7m/s. find the magnitude of the …
List three examples of forces that act at a distance
Asked by admin @ in Physics viewed by 322 persons
5 examples of force at a distance or field force in our daily life?
Following sets of three forces act on a body
Asked by admin @ in Physics viewed by 334 persons
Following sets of three forces act on a body.whose resultant cannot be zero?
a.10,10,10
b.10,10,20
c. 10,20,23
d.10,20,40
Action and reaction forces act on the same body
Asked by admin @ in Science viewed by 289 persons
Do action and reaction act on the same body or different bodies . how are they related in magnitude and direction . are they simuthaneously or not.
The combination of all the forces acting on an object
Asked by admin @ in Science viewed by 364 persons
What is the combination of all the forces acting on an object
What are the forces acting on an object at rest
Asked by admin @ in Physics viewed by 345 persons
Identify all the forces acting on an object at rest
What is the force of gravity acting on an object
Asked by admin @ in Physics viewed by 298 persons
The force due to gravity acting on.an object is called what?
What happens when a net force acts on an object
Asked by admin @ in Physics viewed by 328 persons
If the same net force acts on an object, what happens to its acceleration as its mass increases?
A. Stays the same
B. Decreases
C. Increases
D. Cannot be determined
Sum of all forces acting on an object is zero
Asked by admin @ in Physics viewed by 292 persons
If the sum of all the forces acting on a moving object is zero, the object will
Most viewed questions in English
Suxushi pvt company is looking for a laptop passage
Asked by admin @ in English viewed by 39081 persons
Collins english grammar and composition class 6 answer key
Asked by admin @ in English viewed by 31778 persons
The orchestra has one whistler who plays instruments well
Asked by admin @ in English viewed by 26604 persons
New learner's english grammar and composition class 8 solutions pdf
Asked by admin @ in English viewed by 25147 persons
Class 8 english my big brother questions and answers
Asked by admin @ in English viewed by 22333 persons
Oxford new pathways english book for class 7 solutions
Asked by admin @ in English viewed by 20428 persons
An it company has decided to recruit software developers
Asked by admin @ in English viewed by 20120 persons
Oxford new learner's grammar and composition class 6 solutions
Asked by admin @ in English viewed by 19927 persons
New grammar plus class 6 solutions by ratna sagar
Asked by admin @ in English viewed by 19906 persons
On thursday night a crowd gathered at union square passage
Asked by admin @ in English viewed by 16635 persons
The picture of an ant when enlarged 200 times
Asked by admin @ in English viewed by 14071 persons