Worksheet - Work & Power Problems
1. Work
A. Sample Problems:
1. F= 200 Newtons
d=50 meters
W =?
Formula:
Substitution:
Answer with unit of measure:
2. F= 5 Newtons
W = 75 Joules
D = ?
Formula:
Substitution:
Answer with unit of measure:
3. W= 125 Joules
d= 10 meters
F= ?
Formula:
Substitution:
Answer with unit of measure: _
4. If 150 Joules of work is needed to move a box 10 meters, what force was used?

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

6. an article, which costs rs. 850 is sold at a profit of 6%.what is the selling price ? -a) rs.900 b) rs. 901 c) rs. 890 d) rs. 905