Work Calculations

Kameron lifts his 100-N child up one meter and carries her for a distance of 50 m to the child’s bedroom. How much work does Kam do?

• 0 J

• 100 J

• 5000 J

• 2 J

How much work does Ayana do if she lifts each of her twin babies upward 1.0 m? Each baby weighs 90. N.

• 0 J

• 90 J

• 180 J

• 270 J

Tags

NGSS.MS-PS3-2

Mar’Ionna pulls her sled through the snow a distance of 500 m with a horizontal force of 200 N. How much work did she do?

• 0 J

• 100,000 J

• 2.5 J

• 0.4 J

Because the snow suddenly gets too slushy, Mar’Ionna decides to carry her 100-N sled the rest of the way home. How much work does she do when she picks up the sled, lifting it 0.5 m upward?

• 0 J

• 50 J

• 200 J

• 0.005 J

Because the snow suddenly gets too slushy, Mar’Ionna decides to carry her 100-N sled the rest of the way home. How much work does she do to carry the sled if her house is 800 m away?

• 0 J

• 80,000 J

• 8 J

• 0.125 J

An frog (.2N) on the back of a scorpion (.4N). The scorpion carries the frog across the floor for a distance of 10 m. Was there work done by the scorpion?

• 0 J

• 2 J

• 4 J

• 0.8 J

Tags

NGSS.HS-PS3-1

Ben decides to add up all the work he did yesterday. If he accomplished 10,000 Nm of work yesterday, how much work did he do in units of joules?

• 0 J

• 10,000 J

• 1,000 J

• 100 J

Tags

NGSS.HS-PS3-2

John did 150 J of work lifting a 120 N backpack. How high did he lift the backpack?

• 0 m

• 1.25 m

• 18,000 m

• 0.8 m

John did 150 J of work lifting a 120 N backpack. How much did the backpack weigh in pounds? (Hint: There are 4.448 N in one pound.)

• 0 Jlbs

• 33.7 lbs

• 27 lbs

• 3.44 lbs

Tags

NGSS.MS-PS2-2

A crane does 62,500 J of work to lift a boulder a distance of 25.0 m. How much did the boulder weigh? (Hint: The weight of an object is considered to be a force in units of newtons.)

• 2500 N

• 0.0004 N

• 1,562,500 N

• 0 J

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4