Energy Mixed Practice

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Which forms of energy are included in Mechanical Energy?

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What does GPE depend on?

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What does KE depend on?

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Which scenario represents Kinetic Energy being transformed into Gravitational Potential Energy

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How much work is done by a student holding a book with a force of 5N and walking forward 10 m?

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How much work is done by a shopper pushing a cart with 17 N of force, 26 m?

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Two students are racing up 8 m of stairs with the same force. Student A reaches the top in 2.6 s, while Student B reaches the top in 3.1 s. Who does more work?

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Two students are racing up 8 m of stairs with the same force. Student A reaches the top in 2.6 s, while Student B reaches the top in 3.1 s. Who has more power?

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What is the power in the hydraulic lift that lifts Goofy 10 m, with a force of 15 N, in 10 s?

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Where is Kinetic Energy the highest?

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Where is Potential Energy the highest?

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Where is Mechanical Energy the highest?

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Where is the ball moving the fastest?

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A 60 kg biker is moving at 6.8 m/s. How much kinetic energy does the biker have?

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A 58 kg Olympic diver is waiting at the top of a 30 m diving platform. How much potential energy does the diver have?

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If a 2.5 kg cat is in a tree and has 435 J of energy, how high is the tree?

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What is the GPE at the top?

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What is the KE right before it hits the ground?

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What is the velocity right before it hits the ground?

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A 10 kg ball is thrown in the air with a velocity of 3 m/s. How much potential energy will the ball have at the top?

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A 10 kg ball is thrown in the air with a velocity of 3 m/s. How high does it go?

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If mass were tripled, what affect would this have on GPE?

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If mass were tripled, what affect would this have on KE?

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If velocity were tripled, what affect would this have on KE?

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A 2 kg object was thrown with an initial velocity of 20 m/s. What is the GPE at the top?

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A 2 kg object was thrown up from 0m with an initial velocity of 20 m/s. What is the height it reaches?

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A car produces 1500 J of heat to stop. If the car weighs 750 kg, what is the velocity the car had before braking?

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How much work is done as a 2 kg ball is kicked at 5 m/s?

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A sling shot pulls a pumpkin back with 50 J of kinetic energy. How much elastic energy is stored in the slingshot?

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A sling shot pulls a pumpkin back with 50 J of kinetic energy. How much work is done by the slingshot as it releases the pumpkin?

1

Which forms of energy are included in Mechanical Energy?

What does GPE depend on?

What does KE depend on?

Which scenario represents Kinetic Energy being transformed into Gravitational Potential Energy

How much work is done by a student holding a book with a force of 5N and walking forward 10 m?

How much work is done by a shopper pushing a cart with 17 N of force, 26 m?

Two students are racing up 8 m of stairs with the same force. Student A reaches the top in 2.6 s, while Student B reaches the top in 3.1 s. Who does more work?

Two students are racing up 8 m of stairs with the same force. Student A reaches the top in 2.6 s, while Student B reaches the top in 3.1 s. Who has more power?

What is the power in the hydraulic lift that lifts Goofy 10 m, with a force of 15 N, in 10 s?

Where is Kinetic Energy the highest?

Where is Potential Energy the highest?

Where is Mechanical Energy the highest?

Where is the ball moving the fastest?

A 60 kg biker is moving at 6.8 m/s. How much kinetic energy does the biker have?

A 58 kg Olympic diver is waiting at the top of a 30 m diving platform. How much potential energy does the diver have?

If a 2.5 kg cat is in a tree and has 435 J of energy, how high is the tree?

What is the GPE at the top?

What is the KE right before it hits the ground?

What is the velocity right before it hits the ground?

A 10 kg ball is thrown in the air with a velocity of 3 m/s. How much potential energy will the ball have at the top?

A 10 kg ball is thrown in the air with a velocity of 3 m/s. How high does it go?

If mass were tripled, what affect would this have on GPE?

If mass were tripled, what affect would this have on KE?

If velocity were tripled, what affect would this have on KE?

A 2 kg object was thrown with an initial velocity of 20 m/s. What is the GPE at the top?

A 2 kg object was thrown up from 0m with an initial velocity of 20 m/s. What is the height it reaches?

A car produces 1500 J of heat to stop. If the car weighs 750 kg, what is the velocity the car had before braking?

How much work is done as a 2 kg ball is kicked at 5 m/s?

A sling shot pulls a pumpkin back with 50 J of kinetic energy. How much elastic energy is stored in the slingshot?

A sling shot pulls a pumpkin back with 50 J of kinetic energy. How much work is done by the slingshot as it releases the pumpkin?

A 100 N barbell is lifted 2.5 m over a weightlifters head as they move forwards. How much work is done on the barbell?