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WorksheetsWork and Energy_LS_2
Total questions: 19
Worksheet time: 13mins
_______________ is done when a force acts on an object and the object moves in the direction of the force.
Work
Kinetic energy
Watt
Joule
The equation for work is
work = power x mass
work = power / time
work = force x distance
work = distance x time
The work done on a body moving in a circular path is ……………
Force, distance
Zero
Newton, meter, force
Energy, kinetic energy
Mechanical
1 joule is the work done when a force of one ………….. moves an object through a distance of one ……….. in the direction of ………..
Force, distance
Zero
Newton, meter, force
Energy, kinetic energy
Mechanical
The ability of a body to do work is called ……….. The ability of a body to do work because of its motion is called ………..
Force, distance
Zero
Newton, meter, force
Energy, kinetic energy
Mechanical
The sum of the potential and kinetic energies of a body is called ………….. energy.
Force, distance
Zero
Newton, meter, force
Energy, kinetic energy
Mechanical
Mass of the person, m = 50 kgHeight of tower, h = 72 mAcceleration due to gravity = 9.8 m/s2
Work done W = m x g x h
(a)
When the displacement of a body is at right angles to the direction of force acting on it, then work done is _____.
1
0
2
4
what is the product of force and displacement?
work
power
energy
what is the unit of work?
Newton
Joule
Watt
meter
what is the formula needed to solve for work?
W=F Δ x
W=F/undefined x
F=Wundefined x
if you push a cart with a force of 60 N for 2 m... how much work have you done
120 J
30 J
120 N
30 N
If 40N of force is applied to Rollo Koster's 10 kg cart over a distance of 50 meters, how much work is done?
8000J
8000N
4000J
2000J
Ahmed is out with his friends. Misfortune occurs and Ahmed and his friends find themselves getting a workout. They apply a cumulative force of 1000 N to push the car 200 m out of the sand. Determine the work done on the car.
2 x 105 J
2.70 x 104 J
3.2 x 10-4 J
3.54 x 105 J
Two people push on a wall with 100 N. The wall doesn’t move. How much work is done?
100J
100N
0J
0N
What is the common formula for work?
W=F v cos (angle between the direction of motion and the force)
W=F d cos (angle between the direction of motion and the force)
W=F m cos (angle between the direction of motion and the force)
W=F t cos (angle between the direction of motion and the force)
