Physical Science - Module 5 Review

In which of the following scenarios is no net work done? 

• A car accelerates down a hile
• a car travels at a constant speed on a flat road
• a car decelerates on a flat road
• a car decelerates as it travels up a hill

What is the kinetic energy of a 0.135 kg baseball thrown at 40.0 m/s? 

• 54 J
• 87 J
• 108 J
• 216 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

If the displacement of a spring system was doubled, the elastic potential energy in the system would change by a factor of ___. 

• 1/4
• 2
• 1/2
• 4

If friction is the only force acting on an object during a given physical process, which of the following assumptions can be made in regard to the object’s kinetic energy?

• the kinetic energy decreases
• the kinetic energy increases
• the kinetic energy remains the same
• the kinetic energy

What is the unit for the spring constant?

• N
• N/m
• m
• Nm

What is the unit for work?

• J
• N
• W
• N/m

At what point is the KE maximum?

• 1
• 2
• 3
• 4

If the pendulum is going 5 m/s at #3, how high was it at #1?

• 5 m
• 1.3 m
• 9.8 m
• 0.5 m

Tags

NGSS.HS-PS3-1

What is happening to the KE and PE at #4?

• KE is increasing, PE is decreasing
• KE is increasing, PE is increasing
• KE is decreasing, PE is decreasing
• KE is decreasing, PE is increasing

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

How much work does John do for each push ups if he has a mass of  75 kg and raises himself 0.25 m?

• 183.75 J
• 18.75 J
• 300 J
• 150 J