1. If a sprinter running at a speed of 10 meters per second could convert his/he
ID: 1583022 • Letter: 1
Question
1. If a sprinter running at a speed of 10 meters per second could convert his/her kinetic energy into upward motion, how high could he/she jump?
2. What various forms of energy are present as you shoot a bow and arrow?
3. Answer the following questions: If you push a lawn mower across a yard in 10 sexounds, how does the work done compare with pushing it across the same yard In 20 seconds ? Explain why
A. How does the power for 10 seconds compare to the power for 20 seconds?
1. If a sprinter running at a speed of 10 meters per second could convert his/her kinetic energy into upward motion, how high could he/she jump?
2. What various forms of energy are present as you shoot a bow and arrow?
3. Answer the following questions: If you push a lawn mower across a yard in 10 sexounds, how does the work done compare with pushing it across the same yard In 20 seconds ? Explain why
A. How does the power for 10 seconds compare to the power for 20 seconds?
1. If a sprinter running at a speed of 10 meters per second could convert his/her kinetic energy into upward motion, how high could he/she jump?
2. What various forms of energy are present as you shoot a bow and arrow?
3. Answer the following questions: If you push a lawn mower across a yard in 10 sexounds, how does the work done compare with pushing it across the same yard In 20 seconds ? Explain why
A. How does the power for 10 seconds compare to the power for 20 seconds?
Explanation / Answer
1. Energy conservation,
m v^2 /2 = m g h
h = v^2 / 2 h = 10^2 / (2 x 9.8)
h = 5.10 m
2. elastic potential energy, kinetic energy, gravitational potential energy
3. force and distance is same then work done will equal.
(A) power = work done / time
when time is less, power is greater,.
for 10s., more power .
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.