Calculating Ke and Gpe

Roger Federer’s tennis ball has a mass of 0.3 kg. If he holds the ball above the ground at a height of 2.0 m to serve, what is its gravitational potential energy (GPE)?

• 5.88 J
• 0.6 J
• 6.67 J
• 0.15 J

You serve a volleyball with a mass of 2 kg. The ball leaves your hand with a speed of 30 m/s. What is the KE of the ball?

• 900 J
• 1800 J
• 60 J
• 30 J

Tags

NGSS.MS-PS3-1

Which of the following has the GREATEST IMPACT on the kinetic energy of an object?

• Mass 
• Velocity
• Height
• The acceleration due to gravity

Tags

NGSS.MS-PS3-1

The acceleration of an object due to gravity on Earth is...

• 8.9 m/s²
• 9.8 m/s²
• It depends on the mass of an object
• Equal to its kinetic energy

Tags

NGSS.MS-PS2-4

A skydiver jumps from a plane and is halfway through her descent. At this point in time she has...

• Kinetic Energy
• Gravitational Potential Energy
• Both Kinetic and Gravitational Potential Energy
• She has no energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Energy due to motion is ____________ energy. 

• Potential 
• Energy
• Kinetic
• Friction

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

__________ is stored energy. 

• Potential
• Kinetic
• None of the above 
• All of the above 

Tags

NGSS.MS-PS3-2

Gravitational potential energy depends on the ________ and ________ of the object. 

• Height and mass
• Friction and movement
• Mass and Movement
• Height and Friction 

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• all of the above 

Tags

NGSS.MS-PS3-1

At which point is potential energy greatest?

• W
• X
• Y
• Z

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4