Power Quiz

What is the definition of power?

• the amount of work an object does
• the rate at which force is applied
• the amount of matter in an object
• the rate at which work is done

P=25 watts 
W=5000 Joules 
t=???

• 200 sec
• 0.0005 s
• 125000 s
• 125 s

Tags

NGSS.HS-PS3-1

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

W = 500 Joules 
t = 25 seconds
P = ???

• 0.05 W
• 20 W
• 12500 W
• 2000 W

Tags

NGSS.HS-PS3-1

Tommy carries his piano up the stairs doing 100 Joules of work. If he did this in 10 seconds, how much power did he do?

• 62,50 Watts
• 1000 Watts
• 10 Watts

What is the formula for power?

• P = W/t
• P = W x t
• P = F x d
• P = d / F

These units were given in my problem: 
J , t
What am I solving for?

• power
• distance
• force 
• time

The SI unit for power is...?

• Watts
• Joules
• Newtons
• Meters

What is the work done by the man?

• 0 J
• 65 J
• 6500 J
• 0.0065 J

A man of weight 900 N walks up a hill of height 10 m. What is the total work done?

• 0 J       
• 90 J
• 900 J   
• 9000 J             

Tags

NGSS.HS-PS3-1