A 70Kg person runs at 3m/s. Find KE

A 190 lb person runs at 5mi/hr. Find KE

A cycle rolls with 10000J of KE at 2m/s. Find its mass in Kg.

A rock in top of a 30m tall hill has 2500J of PE, what is mass of rock?

A 1Kg book has 60J of PE. How high up is it?

If a car uses 470J every 3sec, find its wattage.

If Mock operates at 90watts, how many joules does he use every hour?

How muck work can a 100w light bulb do in one hour?

You slide a 40Kg box 2meters in 3seconds. Find power developed.

If a kilowatt-hour is 8.5 cents at Mock's house, how much would is cost him to leave a 1500w hair on for one whole day?

(this is like a speed =dist/time problem…..the speed is the wattage, the time, and the is the money

you pay! First find how many kilowatts Mock used.

How far can you slide a 100Kg object in 4 seconds if you can only use 1000?

How muck will 500w worth of power accelerate a 2Kg mass across 5m of space in 6 seconds?

M=4Kg

V=4m/s

KE=

KE=.5J

V=2m/s

M=

Ke=200J

M=.3kg

V=

M=5kg

H=2m

PE=

PE=775J

H=100m

M=

PE=.2J

M=.01Kg

H=

P=300W

T=.5min

W=

F=5n

D=2m

T=1.5sec

P=

M=2kg

A=2m/s/s

D=2m

T=2s

P=

P=400w

M=.5kg

D=.75m

T=3s

A=