Regents Review - Force and Energy

Which of the following situations describes a system with decreasing gravitational potential energy?

• a girl stretching a horizontal spring

• a boy jumping down from a tree limb

• a bicyclist riding up a steep hill

• a rocket rising vertically from Earth

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

What pair of quantities can be expressed using the same units?

• Work and force

• Power and energy

• Momentum and impulse

• Acceleration and weight

Tags

NGSS.HS-PS2-2

If mass is doubled, what happens to the value of the momentum?

• Halved

• Quadrupled

• Doubled

• Remains the same

Tags

NGSS.HS-PS2-2

A tow-truck applied a force of 2000 N on a 2000 kg car for a period of 3 seconds. What is the impulse of the change in the car’s momentum?

• 8500 Ns

• 6000 Ns

• 1536 Ns

• 3050 Ns

Tags

NGSS.HS-PS2-1

A spring with spring constant 16 N/m is compressed by 0.5 m. How much energy is stored in the spring?

• 1 J

• 0.25 J

• 2 J

• 16 J

Tags

NGSS.HS-PS3-1

The SI unit of Spring Potential Energy is?

• Joules

• Watts

• Newtons

• meters

If 68 W of power is produced in 18 seconds, how much work is done?

• 1,224 J
• 0.264 J
• 3.77 J
• 12.24 J

Tags

NGSS.HS-PS3-1

Which term describes the stored energy of an object up off the ground but still at rest?

• Potential Energy

• Kinetic Energy

• Total Energy

• Positive Energy

Tags

NGSS.MS-PS3-2

The diagram below shows a block sliding down a plane inclined at angle θ with the horizontal.

As angle θ is increased, the coefficient of kinetic friction between the bottom surface of the block and the surface of the incline will

• decrease

• increase

• remain the same

Which of the following objects has the greatest momentum?

• a 1-kg object moving at 200 m/s

• a 10-kg object moving at 30 m/s

• a 2-kg object moving at 20 m/s

• a 100-kg object moving at 2 m/s

Tags

NGSS.HS-PS2-2