Sci 9 Sem 2-4 SG

What states that energy can never be created or destroyed?

• law of conservation of momentum
• law of conservation of energy
• law of conservation of matter
• law of conservation of water

What is the energy of position or shape that depends on weight and height, also called stored energy?

• Energy
• Kinetic energy
• Potential energy
• Sound energy

As energy transformations occur within a system, the total energy of the system ___.

• increases
• decreases
• is transferred out of the system
• remains constant

Energy can cause an object to ______________ the position of its motion. 

• Energy
• Change
• Speed
• Stored

What is the kinetic energy of a ball with a mass of 5kg rolling at 10m/s

• 50 J

• 5 J

• 250 J

• 25 J

What is the kinetic energy of a 4kg shotput thrown with a velocity of 13m/s

• 676 J
• 3.25 J
• 17J
• 338 J

A hedgehog of mass 2kg runs at a speed of 0.5 m/s. Calculate the kinetic energy.

• 1.25 J
• 1.00 J
• 0.50 J
• 0.25 J

Calculate the kinetic energy of an elephant when it walks at a speed of 2m/s having a mass, 2000kg.

• 4,000 J
• 8,000J
• 1,000 J
• 2,000 J

Which point has the greatest potential energy (GPE)?

• A
• G
• D
• C

Which would have the GREATEST gravitational potential energy?

• A 2,000 lb cow in a ditch
• A 2,000 lb cow on a horse
• A 2,000 lb cow on a house
• A 2,000 lb cow on a radio tower