A student of mass 47.3 kg climbs up the stairs in the Physics Department, with a vertical height change 3.2 metres.
What is the change in gravitational potential energy? Give your answer in Joules, to 2 significant figures
A student of mass 47.3 kg climbs up the stairs in the Physics Department, with a...
both questions
A student whose mass is 52kg climbs stairs from the first to the thud floor of the physics building, a vertical distance of 8.3m. What minimum work did she do? A cyclist accelerates at 1.2m/s^2 for 5s and finds her speed to be 11m/s. What was her Initial speed?
What is the change in gravitational potential energy of a 50-kg person who climbs a flight of stairs with a height of 5 meters and a horizontal extent of 6 meters? A. 250 J B. 300 J C. 2500 J D. 3000 J
A 76 kg bike racer climbs a 1500 m-long section of road that has a slope of 4.3 degree. By how much does his gravitational potential energy change during this climb? Express your answer to two significant figures and include the appropriate units.
The winning time for the 2005 annual race up 86 floors of the Empire State Building was 10 min and 49 s. The winner's mass was 60 kg. If each floor was 3.7 m high, what was the winner's change in gravitational potential energy? If the efficiency in climbing stairs is 25 %, what total energy did the winner expend during the race? How many food Calories did the winner "burn" during the race? What was the winner's metabolic power...
In a physics lab, a 80-kg student runs up a 2.5-meter tall flight of stairs in 2.0 seconds. The student's power rating is approximately W. a. 16 b. 64 c. 100 d. 160 e. 400 . 640 g. 1000 h. 4000 Thre roll t View Objectives Quit Mission Save Mission Selec а. С 8u 7 4 5 6 8 2 3
The student with mass 60 kg is sitting in the front row in physics class The instructor with mass 90 kg is standing 3.0 m in front of the student Part A Estimate the gravitational force that the instructor exerts on the student Express your answer with the appropriate units. PAO ? Finste Value Units Submit Request Answer Part 8 How does the magnitude that you estimate for this force compare with the gravity force exerted on the student by...
Name Date 9-10) A 165 pound student grudgingly climbs one flight of stairs (4.32 m) in a time of 15.50 seconds to make it to a physics test. How much work has the student done in climbing steps, and what is the student's average power output? (4.45 N 1 lb) Work Power = 11-12) A collision occurred between 2 carts. Use the data below to complete the charts. Mass of cart 1 Mass of cart 2 Velocity of cart 2...
A physics student pulls a block of mass m = 22 kg up an incline
at a slow constant velocity for a distance of d = 4.5 m. The
incline makes an angle ? = 32° with the horizontal. The coefficient
of kinetic friction between the block and the inclined plane is µk
= 0.3.
1) What is the work Wm done by the student?
2) At the top of the incline, the string by which she was pulling
the...
3) 3) A 20-kg object is resting at the top of a table 1.6 m above ground level. The object is then picked up and moved to a height of 8.7 m above ground level. What is the change in the gravitational potential energy of this object? 4) 4) A car on a roller coaster starts at zero speed at an elevation above the ground of 26 m. It coasts down a slope, and then climbs a hill. The top...
The gravitational potential energy gained by a box having a mass of 2 kg that is lfted to a height of 4 m is 8 joules. asking if it is true or false