Work Lowersixth Science Physics

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Quick true/false on moments and work concepts.

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Work Lowersixth Science Physics


Work Lowersixth Science PhysicsVersion en ligne Quick true/false on moments and work concepts. par YAKILI LMS 1 Work and energy are unrelated concepts in physics. Yes No 2 The area under a Force–displacement graph for a constant force is a rectangle. Yes No 3 Work is always positive for any force acting on a moving object. Yes No 4 Work done by a force cannot be negative in any situation. Yes No 5 Conservative forces never change potential energy. Yes No 6 1 joule = 1 newton × 1 metre. Yes No 7 Work done by a moving object is the rate at which velocity changes. Yes No 8 In uniform circular motion, the work done by the centripetal force over a full revolution is zero. Yes No 9 When lifting a mass upward against gravity, positive work is done by the lifting force. Yes No 10 In a vacuum, no work can be done by gravity. Yes No 11 If a force is antiparallel to displacement, the work done is always positive. Yes No 12 The moment of a force about a pivot depends only on the magnitude of the force, not its line of action. Yes No 13 The SI unit for moment is the joule. Yes No 14 The work done by gravity is always negative when an object falls. Yes No 15 An oblique force has a component along the displacement that can do work. Yes No 16 Centripetal force does positive work in uniform circular motion. Yes No 17 1 joule equals 1 newton × 1000 metres. Yes No 18 The SI unit for work is also the newton–metre. Yes No 19 The moment of a force about a pivot equals the force multiplied by the perpendicular distance to the pivot. Yes No 20 If the displacement is zero, the work done is maximum. Yes No 21 The unit of work is the newton. Yes No 22 The work–energy theorem states that work done on an object equals the change in its kinetic energy. Yes No 23 The Joule is named after James Prescott Joule. Yes No 24 Conservative forces store energy as potential energy; non-conservative forces dissipate energy as heat. Yes No 25 The area under a velocity–displacement graph represents work. Yes No 26 The work–energy theorem states that force equals mass times acceleration. Yes No 27 The area under a Force–displacement graph for a variable force is always a straight line. Yes No 28 The unit of work is the joule. Yes No 29 Work done against gravity increases gravitational potential energy. Yes No 30 Work done by a variable force is the integral of force with respect to displacement. Yes No 31 Work can be positive, negative, or zero depending on the relative directions of force and displacement. Yes No 32 A non-conservative force cannot change the total mechanical energy of a system. Yes No 33 Work done by a force always changes the kinetic energy by the same amount regardless of other energies in the system. Yes No 34 The area under a Force–displacement graph is always a triangle. Yes No 35 The moment of a force is measured in newton-metres but has no relation to distance. Yes No 36 Work done by a friction force is always zero. Yes No 37 The Joule is a unit of power. Yes No 38 All forces that act on an object do positive work. Yes No 39 Power is the total amount of work done in a system, regardless of time. Yes No 40 Work is the same as force. Yes No 41 A variable force requires no calculus to compute work. Yes No 42 Work done by a constant force is the area under the force–displacement graph. Yes No 43 Work done by a force is independent of the direction of displacement. Yes No 44 If a force is perpendicular to the displacement, the work done is zero. Yes No 45 The area under a Force–displacement graph represents the work done by the force. Yes No 46 The area under a Force–displacement graph is always negative. Yes No 47 Work done by gravity is always positive. Yes No 48 For a force acting at an angle theta to the displacement, the work is W = F d cos theta. Yes No 49 Work is defined as the product of force and the perpendicular distance moved, W = F d cos theta, in joules. Yes No 50 The Joule is the SI unit for work, equal to one newton metre. Yes No

Work Lowersixth Science Physics

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Work Lowersixth Science PhysicsVersion en ligne

par YAKILI LMS

Work and energy are unrelated concepts in physics.

The area under a Force–displacement graph for a constant force is a rectangle.

Work is always positive for any force acting on a moving object.

Work done by a force cannot be negative in any situation.

Conservative forces never change potential energy.

1 joule = 1 newton × 1 metre.

Work done by a moving object is the rate at which velocity changes.

In uniform circular motion, the work done by the centripetal force over a full revolution is zero.

When lifting a mass upward against gravity, positive work is done by the lifting force.

In a vacuum, no work can be done by gravity.

If a force is antiparallel to displacement, the work done is always positive.

The moment of a force about a pivot depends only on the magnitude of the force, not its line of action.

The SI unit for moment is the joule.

The work done by gravity is always negative when an object falls.

An oblique force has a component along the displacement that can do work.

Centripetal force does positive work in uniform circular motion.

1 joule equals 1 newton × 1000 metres.

The SI unit for work is also the newton–metre.

The moment of a force about a pivot equals the force multiplied by the perpendicular distance to the pivot.

If the displacement is zero, the work done is maximum.

The unit of work is the newton.

The work–energy theorem states that work done on an object equals the change in its kinetic energy.

The Joule is named after James Prescott Joule.

Conservative forces store energy as potential energy; non-conservative forces dissipate energy as heat.

The area under a velocity–displacement graph represents work.

The work–energy theorem states that force equals mass times acceleration.

The area under a Force–displacement graph for a variable force is always a straight line.

The unit of work is the joule.

Work done against gravity increases gravitational potential energy.

Work done by a variable force is the integral of force with respect to displacement.

Work can be positive, negative, or zero depending on the relative directions of force and displacement.

A non-conservative force cannot change the total mechanical energy of a system.

Work done by a force always changes the kinetic energy by the same amount regardless of other energies in the system.

The area under a Force–displacement graph is always a triangle.

The moment of a force is measured in newton-metres but has no relation to distance.

Work done by a friction force is always zero.

The Joule is a unit of power.

All forces that act on an object do positive work.

Power is the total amount of work done in a system, regardless of time.

Work is the same as force.

A variable force requires no calculus to compute work.

Work done by a constant force is the area under the force–displacement graph.

Work done by a force is independent of the direction of displacement.

If a force is perpendicular to the displacement, the work done is zero.

The area under a Force–displacement graph represents the work done by the force.

The area under a Force–displacement graph is always negative.

Work done by gravity is always positive.

For a force acting at an angle theta to the displacement, the work is W = F d cos theta.

Work is defined as the product of force and the perpendicular distance moved, W = F d cos theta, in joules.

The Joule is the SI unit for work, equal to one newton metre.