Force
The unit kilogram x meter/ second2 is also called
Newton
Unit for Work.
Joules
Force that opposes motion
friction
force times distance
work
The rate at which work is done.
power?
When you increase the force applied to an object, this happens to the acceleration.
increases
(The acceleration increases when you increase the force on an object.)
Equation for Work.
Force x distance
What is force which has an opposite direction from the direction of the motion
force of friction?
work divided by distance
force
Equation for power.
What is Power = Work/time
A water bottle sits on your desk until someone knocks it over. (Which Law?)
Newton's First Law
If you perform 50 J of work lifting a 25 N box from the floor to a shelf, the shelf is...
2.0 meters
Force that a surface employs on an object
Normal force
How much work is done while holding a bag of 10 kg groceries while standing ?
zero
W= 500J
t= 25s
P=?
20 Watts?
A car is driving on a sandy beach and is accelerating to the right with a force of 100N. If the net force is 25N, find the frictional force of the sand.
75 Newton
Force =200N
displacement =50m
Work =?
10,000 Joules?
the force transmitted to ropes , string or wire when pulled by forces acting from opposite sides
Tension force
Amount of work done in 1 second
power?
W= 336 J
P= 14 W
t=?
24 seconds?
A big rock is affected by 20,000 N of gravity. What is the mass of the rock? (Round)
2000 Kg
Work =125 Joules
displacement= 10m
Force =?
12.5 Newton
Wnet force acting on an object with constant velocity?
zero
Amount of time it takes to do 500 Joules of work using 5 watts of power
100 seconds?
W= 225 J
P= 25 W
t=?
9 seconds?